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What does the PCV valve do for a 1999 Saturn SL2?
The "Positive Crankcase Ventilation" valve pulls fumes from the inside of the crankcase, back into the intake. The general idea is, don't allow the crankcase to build pressure, since that's what contributes to main seal failure and severe oil leaks.
Why does 1988 enticer 340 keep blowing pistons?
most likely a crank seal is leaking, or carb boots. have a shop test the crankcase for leaks
Riding mower Briggs and stratton blowing out oil?
The most common place for oil leaks is the sump/crankcase cover gasket. A torn gasket will allow oil to escape. A common cause could be a blown head gasket putting too much pressure in the crankcase.
Will bars leaks repair rear main seal?
Save your money, only a new seal will repair a worn out seal. Be sure the crankcase ventilation system is working properly.
What is the function of a pcv valve?
The purpose of the PCV valve is to regulate the flow of crankcase fumes into the intake manifold where they can be burned. Prior to 1963, cars had no PCV and used road draft tubes that just left the hydrocarbon emissions from the crankcase out into the open air. The PCV valve also has a secondary role as a check valve, to prevent flow back into the crankcase. This prevents potential ignition of the crankcase fumes, should the engine backfire. The PCV system is also crucial for to proper engine sealing. The system alleviates crankcase pressure, which can push out on seals and gaskets, contributing to oil leaks.
How does diesel fuel get in crankcase 255 Massey Ferguson?
Some pos problems include leaking fuel injectors leaks ,fuel pump leaking main injector pump and crack cly sleave
Why is all your gas getting into the oil on your bolens riding lawn tractor?
The float in the carburetor is stuck open. It is letting fuel flow through the carburetor into the intake and into the cylinder, filling up the cylinders with fuel. once full it leaks into the crankcase past the cylinders and past the valves into the head under the valve covers which , in turn drains into the crankcase.
How do you repair vacuum leaks in a 1997 BMW i?
Easiest way is with a smoke machine. It pressurizes the crankcase with smoke that you can see leaking. Other than that, need to check each one, unless you know of something not working.
Why does the distributor cap continue to co rode on 1999 Tahoe?
excessive crankcase pressure can cause caustic gasses to be pushed up the distributer shaft. check to make sure the engine has the pcv system clear of carbon, so it can breathe the gasses back thru the intake system. Another thing that is a good indication of to much crankcase pressure are oil leaks.
What if the oil only leaks when the car is on?
The engine's oil circulation pump pressurizes the system, and forces oil out whereever it can escape. Unfortunately, that's quite likely to be the sign of a leaking crankcase main seal, which is a major job to replace.
What can cause gas to get into oil?
Typically that's when an injector "leaks" fuel after the engine is turned off, the fuel pools in the cylinder then the fuel slowly leaks past the pistons and builds up in the crankcase. It would be a good idea to find out which injector is causing the problem, or at the very least, run some injector cleaner through to see if you can stop the condition.
What causes gas in the oil on a 350 engine?
If it runs fairly normal once it starts and you're getting fuel into the crankcase, it's PROBABLY a leaking injector. After the engine is shut off there is still pressure in the fuel line. If the injector leaks, fuel will drip down into the intake manifold. If a cylinder has an open intake valve, the fuel will leak into there and find it's way into the crankcase.
