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| Cavalier Problem Diagnosis Got a problem you can't fix? We can help. |
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#1 | |
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AF Newbie
Join Date: Nov 2008
Location: seaside heights, New Jersey
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Must change oil more often?
My oils very thin and black when i change it , the car smokes black a little sometimes.Is this normal or is it from low oil pressure?
Last edited by Karplicious; 06-22-2009 at 05:31 PM. |
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#2 | |
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AF Enthusiast
Join Date: Dec 2004
Location: Shellsburg, Iowa
Posts: 3,218
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Re: Help Low oil pressure only at warm up!
Probably a worn out engine or oil pump. Do you always change the oil and filter every 3 months or 3,000 miles?
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'04 Cavalier coupe M/T 2.2 Ecotec Supercharged 14 PSI boost, charge air cooler, 42# injectors Tuned with HP Tuners Poly engine/trans/control arm bushings Self built and self programmed progressive methanol injection system |
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#3 | |
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AF Premium User
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Join Date: Dec 2004
Location: Clarks Hill, Indiana
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Re: Help Low oil pressure only at warm up!
you could pull valve covers and make sure return holes are not gunked up. or it could be like mod said.
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#4 | |
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AF Newbie
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Location: Bloomington, Indiana
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My experience with low oil pressure is that the oil pumps rarely wear out and are not able to deliver their rated capacity...In high mileage engines, this situation usually happens because of worn main bearings and connecting rod bearings let the oil run out too fast and the pump just can't keep the hot oil flowing with enough capacity to prevent the oil pressure from going low.....your bearings should not be that worn especially considering the relatvely low mileage you have on your engine (unless it has been abused..ie ran low on oil, filter not changed for an extended time,... anything to starve the bearings of oil or feed them dirty, unfiltered oil) You should try a straight weight oil (SAE 40 or 50) to see if that helps...The only other thing is that your oil pickup screen may be partially plugged...no one has put a foreign substance in your motor like sugar or something....have they?
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#5 | |
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AF Newbie
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Location: BR549, Texas
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Re: Help Low oil pressure only at warm up!
The oil pickup tube screne on the oil pump is small. I would suspect the the engine is sluged and the pump is starving for oil. Remove the oil pan to see. If clean sounds like a worn engine.
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