pulled off air cleaner oil coming out of throttle body pulled out the sparkplugs they were clean no blowby is this just a bad manfold gasket or is the drainports in the head not draining causeing oil to fill=up under valvecover and backing up
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1994 Oldsmobile Cutlass Supreme
Question: the engine was running rough gave tune-up 6months engine stalled wont re start
Answer #1patrick mannion from Greg Solow's Engine Room, November 08, 2011, 20:46Master
If oil drain to return oil from the head to oil pan were blocked the oil would seep down the valve stems at engine rest causing clouds of blue smoke at start up. Does the engine burn oil? Is the tail pipe showing signs of oil or do you see oil smoke on acceleration or after prolonged engine idle? Perhaps have a cylinder leakage test done and replace the PCV valve.