I have an odd oil leak in my 93 chevy cavalier. Basically when i first start it up, the car leaks oil (from what appears to be somewhere under the right side of the engine-if you're standing in front of the car looking under the hood-, but i can't find the source for certain yet). I'm fairly certain it's not the front or rear seals, I've pressure washed everything out and everything around them appears to be staying dry.
The car will leak fairly profusely for about 2-3 minutes, and then just stop completely. After that, it won't leak while the car is warm and/or running, doesn't matter if you shut the engine off or not (I've shut it off and turned it back on several times with no result). The dipstick in my car is also broken, and i discovered that because of this, i've been accidently over servicing it (meaning i've been keeping the oil at a higher level than what it should be). Is it possible that when the car starts it's getting rid of the excess oil, and after the level gets back to normal it will stop? It's still about half a quart over at this point. Even if this little theory is correct though, the oil has to be coming out from somewhere...but why only when the car first starts?? I'd hugely appreciate any suggestions as to what is causing this. The car is old I realize, but it's all i have and i need to get this figured out. I'd appreciate any help immensely.
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it could be a head gasket that is leaking. what you need to do is visually inspect to see where the leak is coming from. you may have to power wash the motor first and drive or run it then check to see where the oil is leaking.
it is probably the o-ring in your oil pump. I have the exact problem in my Cavalier. it is a little expensive to fix and I believe you practically have to pull the motor to replace it. Just keep oil in it and you might want to wash down the motor compartment area to cut down the oil spray areas. Don't use a cleaner that will make it too clean because with a motor that oil you may cause more leaks. Sometimes with an old motor you need the build-up around certain sealed parts to fill gaps because it is an older motor. I had that problem with my Old mustang may she RIP, i used a detergent oil because I was told to and it started leaking 3 - 4 qts. of oil weekly and didn't before I used the detergent oil.
Overfilled is not good but it would have to be very high to cause leak,There are numerous places in rear of engine that could be leaking.could be leaking from rear of intake,the oilpump drive o ring,but most likly leaking from rear main seal that seals at the rear of the crankshaft and the transmission will need to come out to access this seal. you will need to have the oil leak diagnosed to locate the exact spot.
You can buy a florescent dye to add to the oil and a light to make the dye really shine. Clean the engine with "brake clean" from a spray can at the oil leak areas ....then run the engine. Check for the start location of the leak. Start with a short run time ....... then longer run time if necessary until the leak(s) show. With or with out the dye ......this brake cleaning method should help locate the leak(s).
Oil leak locations could be...in order of the most common on your car are........valve cover gasket,oil filter,oil pressure sending unit,drain plug,oil pan gasket,crank pickup sensor,rear seal.
what exactly is happening if you have a spark plug out of a cylinder you will get fuel out of it? is fuel leaking? are O-rings replaced and use silicone to lube them NOT OIL! oil destroys rubber O-rings.
even if there are wire problems you should not get fuel leaking anywhere. fix your fuel leak first. this can cause a vacuum problem and GMs dont like vacuum leaks.
First of all, which engine does your cavalier have? Some GM engines around that time had problems with the intake manifold gasket leaking oil where the manifold bolted to the top of the engine block, but if I remember correctly, it was in the 3.1 liter V-6 engines. If your car has a 4 cylinder engine, I am not aware of any inherent oil leak problems. BTW, if your oil light has been on for 2 weeks, without your adding any oil, you probably have more serious problems than just an oil leak by now. Maybe not a solution, but it's a place to start.