Quote:
Originally Posted by serialk11r
Wait, how does oil vapor get into the intake in the first place O_O sorry nub question.
I previously read carbon deposits were due to not fully burned fuel spilling out into the intake on intake stroke, but I guess that doesn't make that much sense.
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Quote:
Originally Posted by Marrk
PA, could you briefly explain, for the non-expert reader, how it works?
Thanks.
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Taken from
http://www.smokinvette.com/corvettef...70&postcount=4
SHORT VERSION:
Oil Catch Can is designed to effectively separate oil from the crankcase vapors, thereby eliminating all negative effects of excessive intake system oil contamination.
LONG VERSION
The PCV (Positive Crankcase Ventilation) system is designed to regulate and remove fumes from the engine crankcase, and to alleviate crankcase pressure which
could cause oil leaks or seal damage. The PCV system routes crankcase fumes into the intake manifold where they can be burned to eliminate harmful emissions into the atmosphere. The PCV valve controls the amount of crankcase flow volume depending on the engine's load. With large throttle openings (high engine loads),
the more blow-by gases are produced, and the more the PCV system flows oil vapor in to the intake manifold. The PCV valve also functions as a check valve to prevent intake manifold flow from reversing back into the crankcase when there is a backfire, or during periods of high manifold pressure (boost) during forced induction by turbocharger or supercharger.
Negative Effects of your Stock PCV System:
Many owners with LSX engines can testify to the amount of oil residue that can accumulate inside the intake manifold,
throttle body, intake track and even the air filter during aggressive driving conditions.
There are various negative effects when excess oil vapor contaminates the intake
system from the stock PCV system - such as:
*Throttle body and/or MAFS (Mass Air Flow Sensor) malfunction or failure.
*Air filter, intercooler (if equipped) and intake ducting contamination if oil pools and run back out the intake system after engine shutdown.
*Reduced octane of the air/fuel mixture, which can cause detonation and the ECM (Engine Control Module) to retard timing, thereby reducing engine power.
*Excessive carbon build-up on valves, piston crowns, combustion chambers and spark plugs. This also increases the chance of detonation and power loss.
*Increased emissions & possible contamination of catalytic converters and oxygen sensors.