How Much Blowby Is Normal



Learn what to expect, pain treatments, and the recovery process. Crankcase pressure means just what it says. i got about 1qt out of it. 0 Engine is expected to last up to between another 120,000 to 240,000 miles or 200,000km to 400,000km Hope this helps someone in the future, regards Dave. One of the ways to check if blow-by is too great is to put your oil filler cap upside down on the filler hole. 314" throats, in the ones I have seen, including mine. Hodee Gold Level Sponsor. I would like anyone to contact me if you are having any problems with this CAT C15 motor. How much blowby is normal? Dividing an engine s maximum horsepower output by 50 will give you a ballpark number for how much blowby you would normally expect to see. You may want to check your catch can and see how much oil is in there. S&W and Ruger have looser specs, and recently the factories are passing as acceptable more and more end shake. A typical D size tank, such as the ones we use for training in my classes, would hold 350 to 425 to 415 liters (different manufacturer's stats), and have an average run time of 138 minutes at 3LPM (liters per minute) or 35 minutes at 12LPM. I need the engine blowby prosses and spec. I put to much oil in my 2012 vw turbo but had some removed, the oil pressure rose to 220. WILLIAMS October 31, 2015 at 3:58 am. 3 liter diesel iRV2. You could spot this with the valve cover off and also see if the smoke is coming up from the bottom of the engine while idling. If you see oil starting where intake meets the head, its leaking. Could you tell where the scraping noise was coming from?. This way it prevents too much vacuum from sucking your oil out. It’s always so much cheaper to do preventative maintenance as opposed to waiting for the problem to surface. The issue is the excessive oil in the blow-by gases. I bought a new 2006 Pete last year in March and I have been having a problem with this engine since I hit about 95,000 miles (2 months ago) This truck has been to 3 different shops, and all three shops know that the truck is missing but can't seem to find the problem. How much blowby? Where is the knock coming from? I would start cracking injector lines to see which cylinder isnt hitting and run a compression test on that hole. Page 2 of 2 < Prev 1 2. I would guess a compression test would yield much more accurate info, just curious what you guys would consider too much blowby. In the unlikely event there's an indication of abnormally low oil pressure after adding RESTORE, this is a result of too much sludge in the oil filter so it is best to change the oil & install a clean filter. I would normally expect an engine with this much blowby to use a lot of oil, and it doesn't. One thing I've noticed: 40+ years ago, 1. I've been doing all of my basic maintenance on my 08 Electra Glide Classic thanks to your videos. The cost of this filter is $77. The all-time highest producer of horsepower per pound of turbo boost was the Cummins KTA-600 (see photo), a mechanical engine that was released in 1976 for on-highway use that produced 23 horsepower per pound of turbo boost. Engine Crankcase Pressure (Blowby) - Test SMCS - 1215; 1317 Damaged pistons or rings can cause too much pressure in the crankcase. i got about 1qt out of it. I have been a heavy equipment mechanic for over 20 years so I am no stranger to diagnostics. MaxxForce DT Preventive Maintenance Low Power No Codes. If you're reading this you've likely asked a question about crank case ventilation, catch can placement, correct PCV hose routing, or similar. On advice from Cost Effective Maintenance, he started using FTC Decarbonizer and Flushing Oil Concentrate on a regular basis. Engine is an old 1992 bmw 3. just wanted to make sure it was normal and not blowby. For babies who are born very prematurely, too much oxygen in the blood may also lead to problems in the brain and eye. How Much Homework Is Too Much for Our Teens? Here's what educators and parents can do to help kids find the right balance between school and home. I noticed today that I have some oil dripping from my Harley air cleaner housing onto the right side of the motor. This also allows for a wide variety of air intake options, such as super or turbo charging. Any thoughts or comments would be helpful. Restrictive exhaust should cause it to blow by unless it is really over heating the the oil is thinning out. No, but I will try that. Fix Blowby Fix Blowby — low compression – low oil pressure and get your horsepower back – with metal carbide technology. Meaning, you can have a lot of it and still drive it. Installed a new egr cooler 2 months ago. The tube is filled about 1/2 way with water. A plume of white smoke is generally most noticeable at diesel startup, particularly when it's cold. I never noticed that oil before, and I never reeked of exhaust that bad. The truck is an 08 job 1 running AFE intake, H&S mini max and DPF/CAT delete. Blowby is extremely common on the VP44 Cummins. 0 - sadly sold and miss the ol girl, but digging the six fo 2008 6. In a single cylinder engine or in an engine where the volume of the crankcase changes violently due to piston motion (e. The truck will do fine for about 7000 mi the have a day or 2 of the blowby issue. Not offsetting the break in the engine rings during installation can cause extra blowby. Past that there is the breather set up. Leakage test and a bore scope will tell the tail on the excessive breathing (blowby). Hodee Gold Level Sponsor. Further, oil loss out of the breather is a great indicator of excess blowby and should be investigated. If the dipstick is clean then there isn't any coolant in the oil and what you have is just a normal high-milage pushrod engine. Whats an acceptable amount of blow-by VW MKIV-A4 TDIs (VE and PD) 3 days ago i cleaned out my intercooler from when the first turbo leaked oil. All engines will have it to a greater or lesser extent, even brand-new ones. Wondering how much blowby is normal for my powerstroke 7. Spread the lovePractically every motorcycle enthusiast in the world loves and admires the Harley Davidson brand of motorcycle. Chevy GMC 6. How much blowby is coming out of the blowby tube, scrap that, if the engine itself was usingthat much oil, it would have a steady stream of oil spitting out of the blowby tube. oh, and no fouled plugs, no oil in airbox, and no blue smoke. A turbo car may not necessarily be more prone to burn more oil, but they certainly are harder on oil. The engine is often cheaper since less mass is needed to get the horsepower. If the dipstick is clean then there isn't any coolant in the oil and what you have is just a normal high-milage pushrod engine. In the unlikely event there's an indication of abnormally low oil pressure after adding RESTORE, this is a result of too much sludge in the oil filter so it is best to change the oil & install a clean filter. Restrictive exhaust should cause it to blow by unless it is really over heating the the oil is thinning out. Engine manufacturers are usually much more conservative on their back pressure limits. I've been doing all of my basic maintenance on my 08 Electra Glide Classic thanks to your videos. If you are getting a lot of blowby with the OEM motor, you probably need to address why there is so much blowby from the pistons rather than a better flowing PCV system. Crankcase pressure is usually measured at the breather or the dipstick tube with a water tube manometer or a gauge reading in "Inches of Water". UNCLASSIFIED UNCLASSIFIED. MaxxForce DT Preventive Maintenance Low Power No Codes. I noticed today that I have some oil dripping from my Harley air cleaner housing onto the right side of the motor. This condition no power no codes is a common problem with diesel engines. Some engines will exibit blowby as a normal output under extreme load. 007 inches times the bore diameter. Replied by Chevyman21 on topic Normal Blowby for a BBC? This may be a stupid question but how do I know for sure its on ported vacuum? It's connected to the carb via a small hose so that's why I believe its ported vacuum as well as the fact I can remove the line and the engine won't even sputter, not to mention the orifice diameter is very very. Blow by is hard to define, since there is no definite quantity to it. If the VC breather isn't leaking much but you can't hold boost, then track down the normal boost leak locations: couplers, leaking IC, BOV flange, vac lines, TB gaskets, BISS o-ring, TB shaft seals, IM/head gasket, injector insulators. Those Ruger single sevens came with extremely smooth barrels, and. How much blowby is normal? Dividing an engine's maximum horsepower output by 50 will give you a ballpark number for how much blowby you would normally expect to see. You could spot this with the valve cover off and also see if the smoke is coming up from the bottom of the engine while idling. Blow by is not good since it robs engine power and builds up gas pressure in the crankcase. We used to do the blow-by test on our army truck and APC diesels, but those were ultra-primitive lumps with no emissions related equipment or intelligent controls (the latter including the drivers). How much is normal? As an aside, don't try to use the late style side cover with the short upturned pipe and install a crankcase breather on the pipe. This topic will review various devices that are available to continuously deliver oxygen to spontaneously breathing infants, children, and adults. Some blowby is normal in all engines, this is the reason for the pcv system (positive crankcase ventilation). I would normally expect an engine with this much blowby to use a lot of oil, and it doesn't. Diesel Smoke tells YOU a Story. One supplier of blowby flow meters said contrary to what many people think an engine typically has more blowby at idle than at higher rpms. As far as your new problem, can you see where the oil is coming? At 138k miles the front main seal could be shot and puking oil, your tappet cover could be leaking or a couple other issues. All engines will have it to a greater or lesser extent, even brand-new ones. 4L Power Stroke Problems & Concerns. Another way to save money on service or repair is for the owner to remove items such as full fairings before taking the bike to a dealer. The breather can then become restricted in a very short time. Performance, oil control and blowby control quickly returned to normal. The can fills up frequently, too frequently to be considered normal in my opinion, it fills up after a couple of thousand miles if he takes a long trip. At 900,000 km, the engine was still running sweater than ever, and no oil consumption. In a turbocharged engine the turbocharger shaft may spin in excess of 10,000 rpm. 3 open -10an ports don't suffice. I can't tell from your description if you are testing lock up this way or not. It's always so much cheaper to do preventative maintenance as opposed to waiting for the problem to surface. A blowby flow meter can inform you specifically just how much blowby is taking place within the engine. From all the engines I have worked on, I have found that they don't do much for a high mileage diesel engine with tons of blow by and high oil consumption. I've had it a few years now and I'm wondering if the amount of blow by gasses coming from the crankcase is normal. Open the hood and remove the oil filler cap. I don't ever notice any oil on the underside of my truck so I don't think there's much if any spray. The Cat® C13 ACERT™ Industrial Diesel Engine is offered in ratings ranging from 287-388 bkW (385-520 bhp) @ 1800-2100 rpm. I own an 06 with a rebuilt motor but the re-used the turbo which blew when it had 123000 miles on it. As for the oil blowing out of the tube, it depends on how much oil blows out of the tube. Obviously, the mechanic performing this part of the work must have the necessary tools and experience, and in some cases, the bike will need to be transported by trailer to the dealer as it is not road worthy without its fairing (no headlight or turn signals. The oil level is low between oil changes. Any sludge and dirt particulates held in suspension will be trapped in the oil filter. OK chaps as posted elsewhere my 2. Alright, So i've been reading up about this blowby problem that has been occuring to me and it seems like it isn't so much the valves out of wack anymore. Adept Ape 347,050 views. I'm not real big on the idea of tearing down an engine just because it has more blowby than I care for. I read on here all the time, and there is so much knowledge. The hose that comes down from the valve cover intersects with other hoses from the vacuum pump. 37 thoughts on " What Causes a Turbo To Blow, Leak, or Burn Oil? Find Out HERE! " Dr. New engine / rebuilt engine blowby between 1. Are you asking for the crankcase pressure differences between the CCV routed to the intake, in the stock configuration, vs an open road draft tube out the bottom of the truck?. Re: How much blow-by is too much? Oil and charge light up before starting, not temp, on YM240 and I assume YM2000. He is incorrect about the color of the oil - oil that quickly changes color after a change can indicate excessive blowby. 4L Power Stroke Problems & Concerns. when turbo kicks in there is so much vaccum that the CDR progressively closes as vaccuum increases. It appears that the oil is being burned by the engine because of the smoke in the exhaust. I'm suspecting it's the rings but why am I getting good compression and still high blowby?. We are in the throes of re-powering Morgan’s Cloud, and as far as we are concerned, this unpleasant and expensive task has come about 4000 engine hours too early. On a daily driver, blowby is pretty much whatever it is. !st would be to pull the carb off and look down the runners. A small amount is fairly normal but if the smoke is getting to you then its time to tear it down. The Effect of Back Pressure on the Operation of a Diesel Engine. The pressure can be caused from blowby, which is compression gas making it way past the pistons, rings and liners. Blowby gases are primarily from rings not sealing. I had been told in the past that the blowby was normal, but my brother-in-law purchased one this past summer and his doesn't have any blowby. How much blow-by are you guys getting out of the oil fill cap with the engine running? A buddy was wondering how much is normal on his 7. Diesel smoke (like blowby and oil use) is a worrying engine symptom which indicates that an engine is not running well, and its service life is likely to be shortened considerably, unless remedial action is taken. how much blowby is normal? Discussion in '"Stock" Alpine' started by mightyohm, Jul 9, 2018. The fuel filter module and high-pressure fuel pump are located on the left side of the engine. Blowby and radiative losses are usually smaller. There are well-established percentages that are good rules of thumb when estimating your "effective FiO2" at home under normal conditions. Here are some common causes of blow-by and excessive oil consumption and how you can avoid them on your next engine build. When motor dropped to normal idle the bag would fill up slowly but when I rev the motor it filled up instantly. Note that this is not an exclusive indicator of engine condition, but a factor to consider. 3 Tech & FAQ. ) Rechargeable lithium Ion battery for long life and charging via USB cable to PC. The engine has done 130k km and appears perfectly fine, no smoke at the back at all, starts smoothly. Common Issues and Problems We See In The Shop With The LB7 6. me and a buddy were looking at a few for him and it seems they all have some blow by that seems too much? do they all just do this? 2004 6. 3L IDI Diesels ' started by Moretorque , Dec 6, 2013. Foaming greatly reduces the capacity of oil/gas separators because a much longer retention time is required to adequately separate a given quantity of foaming crude oil. Maybe its a normal level of blowby? not sure, this camry is a little different. I took my cap off with like 5k on my 15 and was surprised how much it had. 5 Engine Oil Myths. Didn't see second page of responses. Active 2 years, 10 months ago. Advanced Calibration factors let you fine tune your blowby meter's calibration. Blow-by can be caused from piston rings that are worn out. If the VC breather isn't leaking much but you can't hold boost, then track down the normal boost leak locations: couplers, leaking IC, BOV flange, vac lines, TB gaskets, BISS o-ring, TB shaft seals, IM/head gasket, injector insulators. As for how much vapor come out the tube, it will depend on how hot and how hard you have pushed the engine. I purchased a car a month or two ago and was recently told that if there is air coming out of the oil fill cap it was a sure fire way to tell if your car was about to die. Basically, smoke from a diesel engine indicates that something is not right. When cars get to like 150,000 or 200,000 they can start to but if it using an eppreciable amount between services then the engine is fucked. I honed the barrels and replaced the rings. One end of the tube will connect to the special blow by fitting, the other end is just open. But excessive engine oil consumption should be taken seriously. a lot easier witha bore scope. Is this normal? How much would you expect if any from say a new engine when it's revved. It appears that the oil is being burned by the engine because of the smoke in the exhaust. I would normally expect an engine with this much blowby to use a lot of oil, and it doesn't. Even the best street engine never seals all that combustion pressure. Though there is not much to an engine bearing at first glance, it is a true marvel of engineering. All of them have some degree of blowby. Exhaust blow-by is the term used to describe combustion gases inside an engine that leak past the piston ring seals and into the engine crankcase. Foaming greatly reduces the capacity of oil/gas separators because a much longer retention time is required to adequately separate a given quantity of foaming crude oil. Meaning, you can have a lot of it and still drive it. A plume of white smoke is generally most noticeable at diesel startup, particularly when it's cold. Crankcase Vacuum Technical Information - Dry Sump Oil Pumps for Racing Engines - High Quality, Unbeatable Price. Blowby gases are primarily from rings not sealing. For example, diesel generator set engines from Caterpillar, Cummins, John Deere and DDC/MTU ranging in size from 15 to over 1000 kW have back pressure limits ranging from 6. Obviously, the mechanic performing this part of the work must have the necessary tools and experience, and in some cases, the bike will need to be transported by trailer to the dealer as it is not road worthy without its fairing (no headlight or turn signals. Is this normal or could it be an indicator of piston blow-by due to a piston issue?. While changing my lift pump out this past Monday I noticed that I have more than a ideal amount of oil dripping out of my blow by tube. Then my mother asks me about the several black spots in the gravel driveway today so Im begining to wonder if something is wrong with my truck. I would guess a compression test would yield much more accurate info, just curious what you guys would consider too much blowby. 314" throats, in the ones I have seen, including mine. some engines have more blow by than others by there design. Is there a "rule of thumb" as to how much blowby is "normal" for HP produced? I noticed on methanol engines the blowby is higher for the same HP. Even the best street engine never seals all that combustion pressure. UNCLASSIFIED UNCLASSIFIED. Now we're looking at a 2nd ring end gap of. Note that this is not an exclusive indicator of engine condition, but a factor to consider. 7 Cummins trucks have a catch can down under the radiator or something. I don't ever notice any oil on the underside of my truck so I don't think there's much if any spray. Anyway, this is when I figured out that the blowby tube was a downdraft tube. 7 powerstroke blowby. If you are only running 7psi, I wouldnt think that much boost on the stock ecu would not cause detonation. As soon as I put this on my oil comtamination dropped probably 50%. Pre-Power Stroke Diesel (7. Note that this is not an exclusive indicator of engine condition, but a factor to consider. Before you figure out how much to put down on a house, you need to know the basics about what a down payment is and how it factors into your home purchase. This information is brought to you exclusively by Todaysmower. running off like normal motor oil does over time. Pulses are normal. You can get some blowby from exhaust valve guides if extremely worn but is not likely. If you're new to the use of a vacuum pumps for racing applications, this guide and technical notes will give you a good overview of what you need to know in order setup your vacuum pump system. 9L) - how much blow by is normal - i picked up a 7. Too loose a top end wil cause excessive blowby. As the speed goes up, the rings actually seal better and blowby drops. The reason - high internal engine pressure - 2 to 3 times what is produced in a gasoline engine. Diesel generator set QST30 series engine 680 kW - 1000 kW 60 Hz Description Cummins ® commercial generator sets are fully integrated power generation systems providing optimum performance, reliability and versatility for stationary Standby and Prime power applications. Campaign 0953. WebMD explains the stages of normal labor and delivery. The tube is filled about 1/2 way with water. Sometimes. Obviously, the mechanic performing this part of the work must have the necessary tools and experience, and in some cases, the bike will need to be transported by trailer to the dealer as it is not road worthy without its fairing (no headlight or turn signals. When motor dropped to normal idle the bag would fill up slowly but when I rev the motor it filled up instantly. The engine is out of the car now and in messin around with it I noticed that the number 5 and 6 cyl have anti freeze that comes out when the engine is turned (all spark plugs out). I would do as said previously a compression test of each cylinder. Performance, oil control and blowby control quickly returned to normal. blowby and smoke on my detroit got about 1200 miles on my 12. Cylinder pressure should stay in the cylinders where it belongs, but some is invariably going to leak past the rings (assuming you aren't leaking intake pressure into the CC through a worn PCV valve or something in the first place). John Deere Review 870 with a knock and blowby: 2001-11-25 20:33:24 33410 critterpainter A couple of months ago I posted about a JD 870 fwd that I was thinking about buying in spite of 4K hours on the clock, a miss and white smoke at start-up and pretty bad blow-by. How much blow-by is normal? my CB400T runs great, the intake, and exhaust is stock, jeting is 2 sizes up on the primary, I have no complaints there when I changed the oil last week, I took the drain plug off (engine warm) I let it drain for a bit and then I gave it a few kicks to see if more oil would come out. Ok im getting excessive blowby out of my vent ,no fuel in my oil,my upper coolant hose isnt rock hard,But my #6 injector balance is reading 8. I had been told in the past that the blowby was normal, but my brother-in-law purchased one this past summer and his doesn't have any blowby. Basically, smoke from a diesel engine indicates that something is not right. Excessive blowby will cause exhaust fumes to pulse out of the opening. I'm just puzzled by what it does, and how much it is. Want Answer 0. Re: 496 BBC How much Blowby is Normal? Well there are a couple of things you can do the check for a leaking intake. excessive blowby. My mechanic tells me the truck runs great but has a lot of blow by. Some blowby is normal in all engines, this is the reason for the pcv system (positive crankcase ventilation). The issue is the excessive oil in the blow-by gases. A small amount is fairly normal but if the smoke is getting to you then its time to tear it down. The combustion process is never perfect. A larger variable rate tank (the kind you use a regulator with) will hold much more. Top bottom and in the middle. The truck has 136,000 miles and I really need to ge another 100k out. 3, blow by is normal, but do need to watch it excessive blow by is a sign of piston wear/ piston ring wear and or cylinder wall damage. I put in the Fast Freddie weber kit, Fox AirShox with limit straps and long travel, modified/built a better header, fixed the lighting (including flashing blue and amber rear safety lights), put on paddles in the back and made my own front runners from worn-out stock tires, and tore up the dunes at Dumont. There will be more than the normal amount of fumes (blowby) rising from the crankcase breather. Cummins charge air cooler tester. What Is Blowby? What Is Too Much Blowby? - Duration: 8:53. If you're reading this you've likely asked a question about crank case ventilation, catch can placement, correct PCV hose routing, or similar. Ok im getting excessive blowby out of my vent ,no fuel in my oil,my upper coolant hose isnt rock hard,But my #6 injector balance is reading 8. Is this normal? How much would you expect if any from say a new engine when it's revved. In a turbocharged engine the turbocharger shaft may spin in excess of 10,000 rpm. Blowby is extremely common on the VP44 Cummins. Re: How much blow-by is too much? Oil and charge light up before starting, not temp, on YM240 and I assume YM2000. A4 (B6 Platform) Discussion - how much blow-by is normal? - while doing an oil change today I looked at the FMIC pipe going from the cold side of the FMIC to the manifold and at one of the couplings I noticed some oil spray. On advice from Cost Effective Maintenance, he started using FTC decarbonizer and flushing oil concentrate on a regular basis. Dec 6, 2013 at 2:13 PM #1. Some blowby is normal in all engines, this is the reason for the pcv system (positive crankcase ventilation). Blow -by in diesel tractor discussion in the Tractor Talk forum at Yesterday's Tractors. When buying a used car, the condition of the engine is very important because engine problems are expensive to repair. And usually you won't see any blowby out the breathers unless things are really bad as a functioning pcv value will pull most all blowby back into the intake for burning. Excellent Video as always. How much blow by is normal on a 6. Advanced Calibration factors let you fine tune your blowby meter's calibration. How much blowby is coming out of the blowby tube, scrap that, if the engine itself was usingthat much oil, it would have a steady stream of oil spitting out of the blowby tube. 3L IDI Diesels ' started by Moretorque , Dec 6, 2013. Are you asking for the crankcase pressure differences between the CCV routed to the intake, in the stock configuration, vs an open road draft tube out the bottom of the truck?. But, this is dew point related. Re: 496 BBC How much Blowby is Normal? He also made a good point regarding the #6 cylinder picture that if the oil scraper ring was that bad then all of that oil would have leaked right by it instead of being close to the top of the cylinder still after i rotated it. All cars consume oil, at different rates depending on the engine model, driving patterns, engine load, and maintenance history. When it is completly plugged the pressure from blowby has to go somewhere so usually it pushes oil past the main bearing seals, valve cover gaskets, etc. One end of the tube will connect to the special blow by fitting, the other end is just open. When buying a used car, the condition of the engine is very important because engine problems are expensive to repair. Campaign 0953. Subaru has agreed to settle in the oil consumption lawsuit filed against them in 2014. I would guess a compression test would yield much more accurate info, just curious what you guys would consider too much blowby. Blowby Data Logger Program. Blowby is combustion pressure making it past the rings which pressurizes the crankcase, which in turn can cause oil to vent out the breather lines, or out of the turbo seals due to back-up of the oil return line. If the cap gets blown off, there is too much pressure in the crank case. I own an 06 with a rebuilt motor but the re-used the turbo which blew when it had 123000 miles on it. When the needle drops to a low reading, returns to normal, and then repeats the pattern at regular intervals, you're likely looking at a burnt, sticking, or leaking valve. I am surmising here but maybe no blowby means exactly what it says, none at all, and "normal" blowby means whatever would be considered normal bearing in mind the hours on the. I didn't do much today, but i'am going to give it hell tomorrow. There are over 225 complaints on CarComplaints. How much Blowby is too much? Hey guys, I have an 05 2500 5. A crankcase is the housing for the crankshaft in a reciprocating internal combustion engine. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Basically, smoke from a diesel engine indicates that something is not right. Given that in modern cars the oil change interval is growing longer & longer, and given that most manufacturer's still state that some oil consumption, usually up to a quart every thousand miles, is considered normal, we as consumers are going to have to get back in the habit of checking our oil levels between changes. They can subject oil to some pretty high temps and if run hard and shut down immediately can actually cook the oil in a process called "coking". I've had it a few years now and I'm wondering if the amount of blow by gasses coming from the crankcase is normal. by your reading this website or any pages therein, you agree to the website's disclaimer, terms & conditions. Of course, this engine is a year old, and I have only recently felt comfortable running wot consistently. If the cap gets blown off, there is too much pressure in the crank case. There Are Some PCV Valve Issues. Cummins® Engine Oil and Oil Analysis Recommendations Introduction This document outlines the proper application and maintenance of engine oil for engines manufactured by Cummins Inc. Some engines will exibit blowby as a normal output under extreme load. Restrictive exhaust should cause it to blow by unless it is really over heating the the oil is thinning out. Ok im getting excessive blowby out of my vent ,no fuel in my oil,my upper coolant hose isnt rock hard,But my #6 injector balance is reading 8. Campaign 0953. Could you tell where the scraping noise was coming from?. Dec 6, 2013 at 2:13 PM #1. At 900,000 km, the engine was still running sweater than ever, and no oil consumption. If the pintle inside the PCV valve sticks open, or the spring breaks, the PCV valve may flow too much air and lean out the idle mixture. With your vehicle info handy, give The Pelican Parts parts specialists a call at 1-888-280-7799. We have been fixing blowby, low compression and engine wear for 12 years with these CerTech Gels simply because it is so effective. Chasing a vacuum leak between rounds is no fun, especially on the front crank seal & the rear main seal. Even the best street engine never seals all that combustion pressure. 3, blow by is normal, but do need to watch it excessive blow by is a sign of piston wear/ piston ring wear and or cylinder wall damage. And you're right about the engine having dry liners. Blow by is hard to define, since there is no definite quantity to it. Depending on the engine and the ring package, it starts costing you nearly as much hp to turn the vacuum pump as the increase in hp from the vacuum. Oil smoke also lingers much longer than water vapor. How much blowby is normal? Dividing an engine's maximum horsepower output by 50 will give you a ballpark number for how much blowby you would normally expect to see. Right now as a test I have it venting to atmosphere through a catch can and the can fills up pretty quickly. Valve is very weak compared to a piston, so probably not. If the dipstick is clean then there isn't any coolant in the oil and what you have is just a normal high-milage pushrod engine. Normal/Low Pattern. excessive blow by, is the cause of worn pistons and or piston rings. How Much Homework Is Too Much for Our Teens? Here's what educators and parents can do to help kids find the right balance between school and home. Those Ruger single sevens came with extremely smooth barrels, and. Here are some common causes of blow-by and excessive oil consumption and how you can avoid them on your next engine build. “A normal plateau finish with Rpk 8 to 12 microinch, Rk 25-35 microinch, Rvk 40 to 50 microinch) is a good starting point for general use. Alright, So i've been reading up about this blowby problem that has been occuring to me and it seems like it isn't so much the valves out of wack anymore. You can get some blowby from exhaust valve guides if extremely worn but is not likely. What actually happens when there is way too much oil in a car engine? Ask Question Asked 3 years, 8 months ago. Crankcase pressure means just what it says. 3C pukes a few ounces every 1500 mile or so and that's normal for this engine. The all-time highest producer of horsepower per pound of turbo boost was the Cummins KTA-600 (see photo), a mechanical engine that was released in 1976 for on-highway use that produced 23 horsepower per pound of turbo boost. In an internal combustion engine, there is a an empty can-like void called a cylinder cut i. It runs like a champ but has severe blowby from the oil filler and dipstick tubes (smells like exhuast but doesnt seem to have any oil in it). All cars consume oil, at different rates depending on the engine model, driving patterns, engine load, and maintenance history. A turbo car may not necessarily be more prone to burn more oil, but they certainly are harder on oil. A little blowby is normal even a new engine has a little. How much "blow-by" is normal OK, got ccv mod with hose running down frame rail exiting just ahead of rear wheels I am noticing vapor & fumes more and more coming off extended runs of 3-10 hrs. me and a buddy were looking at a few for him and it seems they all have some blow by that seems too much? do they all just do this? 2004 6. Most people are reporting 4-5 inches of blowby. Oil Blow by I have a fairly fresh engine and I am getting alot of blowby out of my valve cover filters, can too much oil in your engine cause alot of blowby? Right now I am going by oil pressure as far as how much oil I have because I have an oversized oil pan, & until my universal dipstick comes in I don't really know how much is in there. I purchased a car a month or two ago and was recently told that if there is air coming out of the oil fill cap it was a sure fire way to tell if your car was about to die. How much blow by is normal out the oil filler cap? Discussion in ' 6. Sure it's getting a little long in the tooth (300'000), so some use is normal. {{configCtrl2.