I have a 1999 Supercharged Mustang V6 Coupe. I always find oil in the air inlet tube that connects to the throttle body. I just had the unit refurbished with new bearings and seals by the manufacturer (Vortech). I can not figure out why this is happening. I have checked every part of the engine that could possibly be the cause. My final conclusion is this: I have a set of BBK valve covers with no baffles (but recently installed some from the stock covers). Is it possible that the supercharger is sucking the oil from the passenger side PCV valve and hose into the inlet duct which continues to force the air and oil out through the inlet tube? This is causing a real problem for me. I must constantly clean my spark plugs practically bi-monthly and the oil from the inlet tube.
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