Question about 1995 Buick Regal

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Engine runs smooth. temp light goes midway, oil light off. After driving about 10 minutes, oil light comes on and slight knocking noise,templight normal. Rev rpm to 2000& oil light goes off knocking noise stops. ????

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Sounds like a dirty oil pickup tube. Not enough pressure in the system until higher rpm's to get oil pumping into the pump, unless pump is weakening. Check all your oil pan and valve cover gaskets. If they look ok, and you have fresh clean 5w30 oil, and not the thicker oil like 10w30 or 40, then it could be a clogged oil pickup tube which is inside the oil pan.

Posted on Feb 06, 2010

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