what are the most common oil leaks in this engine?
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2002 Mazda 626 Question: what are the most common oil leaks in this engine?
Answer #1patrick mannion from Greg Solow's Engine Room, January 06, 2012, 20:44Master
Valve cover gaskets, cam and crank seals, rear crankshaft oil seal. Oil leaks can be caused by excess crankcase blow bye or a bad PCV valve.
Check the crankcase is breathing properly and not building up pressure. After that perhaps you would need to add dye to the oil and look at it with a florescent light to pinpoint the source of the leak.
Replyzing1956, January 06, 2012, 22:08Rookie
I have already replaced both valvecover gaskets. It is leaking from the front side of the engine. Any thoughts?