Dark 0 Dark 0 Special Contributor; Users; 0 478 posts; Trader Feedback. Chevy Truck Forum | Silverado Sierra GMC Truck Forums. ), Oil filler cap or oil fill gasket is damaged or missing, Breather mechanism is dirty, damaged or defective, Blown head and pressure is being blown out of the breather. The motor is running ok, it still has the power. 2nd that my truck was doing the same thing and it was 2 bad injector bodies Feb 16, 2014 #1 I have been using my tractor today with a trailer and chainsaw clearing up some trees that had fallen due to the storms we have had in the UK. If your street engine tends to pull too much oil through the PCV valve or the valve cover breathers are constantly wet, check to ensure the valve covers are equipped with vapor separators like these. Jan 27 2015, 2:10am . High RPMs means lots of oil getting pumped. In a diesel engine, blow by is defined as the compressed fuel/air mixture in the combustion chamber leaking past the piston and entering the crankcase. The most important source of blowby is the combustion chamber, Figure 1 [1774]. Discussion Starter • #1 • Sep 20, 2010. We use cookies to give you the best possible experience on our website. … Could it be possible that I still have too much oil in the engine or is there something else here that is a much bigger problem. This is an apparatus that by adding to a diesel engine, stops the engine oil blow out in many diesel engines. Bear in mind that aluminum is a soft metal, and grit accumulation in the combustion chamber carves grooves into the piston. Place your palm over the oil fill hole. Excessive Blow By is also a sign that your oil is thinning out and the engine is due for an oil change. If they designed the piston for a snug fit when the engine is cold, the piston would seize inside the cylinder when it heats up due to thermal expansion. Got a new compressor. I have a new PCV valve in the passenger side cover, with a baffle. If an engine’s breathing system should become blocked or restricted, the crankcase will pressurise causing any one or more of the following problems: The oil/air mix will force its way out through any other convenient exit e.g. By extending the crankcase breather tube up and over the engine to point towards the ground on the other side of the engine, gravity kept the oil from blowing up and out the tube while emissions still exited the tube from the crankcase. Be sure your using diesel grade oil, also be sure to use the correct filter. It's important to check the oil breather tube for blockages, because excessive crankcase pressure can lead to blowing out the front seal of your crankcase. If you overfill your engine's oil, you'll have the same problems. On an open breather,especially the round ones that are open on the bottom,the oil will get into the breather and them drip out the holes in the bottom. Pull out the dipstick and try burning the oil on the dipstick with a match; If the oil on the dipstick spatters, there is water in the engine oil. Posted: Sun Sep 11, 2011 6:14 pm Post subject: Engine oil out the breather tube: Have a Timber Jack 205 log skidder that I use during the winter months. … If the valve covers are not equipped with these separators, the PCV will pull way too much oil into the intake. If it misses sometimes as stated then remove the exhaust manifold and plug the oil line to the turbo is there is one and start the engine and see if there is a missfire. Help please . Remove the oil filler cap and look at the oil fill hole to see if smoke is puffing out. To enable this system to work safely and efficiently the … Most racers have evac tubes to the headers,but since so many full race cars are running header mufflers,the evac tubes dont really do much anymore,and the crankcases are building too much pressure. As the engine heats up, the piston expands, and blow by disappears under normal operation. I relaped valves and replaced all the gaskets I could and put it back together. I had a diesel engine that did the same, although it was complicated by the fact that outlet of the crankcase breather fed into the intake of the turbo and my only clue was water droplets and excessive oil stain at the turbo. The tube that the liquid is coming out of is the crankcase vent. Researchers at the Helsinki University of Technology ran extensive studies of piston rings and concluded that worn rings are a source of blow by. If it is, you have a significant amount of blowby. It's important to check the oil breather tube for blockages, because excessive crankcase pressure can lead to blowing out the front seal of your crankcase. any ideas? I was wanting to know if anyone knew why this would happen. Prior to 1963 most vehicle engines vented their vapours and oil deposits to atmosphere and the road surface! The engine runs great , no missing , no blowby, ect. I have a stock 2002 4x4 crewcab. My boy has a 2010 DS90X and after the rebuild we are noticing a lot of oil blowing out of the breather vent. Metals expand at different rates. I have a riding mower with a 12 1/2 horse OHV engine. If droplets of oil gets blown out at the breather, the crank case has too much oil in it or compression is leaking past the pistons. [Gasket or crack] The cavity holds about a cup of oil. These grooves are an ideal place for the compressed fuel/air mixture to escape into the crankcase. What could this be head gasket,valve seals,or something else.I'm going to do a compression test tomorrow. If engine runs good and starts good without a lot of smoking, I would … It has a Ford diesel motor, was told the same one that is in a Fordson Super Major tractor. Quite a bit of oil. Joined May 23, 2011 Threads 91 Messages 5,685. checked oil and was overfull, drained a quart out (now there is only 2 qts. I'm willing to bet you just have too much oil in there. Pulled dipstick, oil level quite high (half way up stick) and very thin. Oil coming up thru the breather into the carb on a Kohler CH20. Tony Oldhand has been technical writing since 1995. As a engine runs the crankcase will build up air pressure and that tube vents it into the air cleaner. In this Video I am showing you how easy it is to make / custom your own Oil Cover Breather by using the existing Oil Cap and Mod it to your needs. O. Orangetree New member. Was doing some reading and it could be fuel pump gasket leaking fuel into oil. High RPMs means lots of oil getting pumped. Suggestions Please The tube that the liquid is coming out of is the crankcase vent. any ideas? Discussion Starter • #1 • Mar 27, 2016. If you feel pressure building up you have blowby. Hi I have a Yanmar 2qm20 motor and have been using it for about 4 years now. Kubota Talk . 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