Engine oil leak

if you can find a motor oil leak while in the wave runner
rear engine seal / oil filter seal /rocker covers front cover seals
lift the motor out and replace all the engine seals and gaskets


unseen internals
hardened valve stem seals /burning oil through rings

A plugged pcv system will cause excessive oil leaks. But it sounds like you have a massive leak. If the passenger side is leaking behind the timing cover there may be up to four seals that may leak.single cam motor will have one cam seal dual will have two cam seals. Crank seal and possible oil pump seal. Would recommend pressure washing motor, go to local parts store and get some engine dye. Then support car and let engine get warm. And try to pinpoint leak.

Need to inspect closer and make sure the exact place the oil is coming from....Most common places that leak are around valve pan cover which is located on top of motor and in alot of cases can run down back of motor onto transmission or bottom or motor. Another place is the oil pan which is located on bottom of motor. If leaking from either of these you would need to replace the gaskets. Two other places that are common for leaks is the front and rear seals in the motor. Try cleaning bottom half of motor off with a degreaser in the area where you see yhe oil dripping and then you should be able to see exactly where it is coming from. If the leak is underneath where the transmission is bolted to the motor this would indicate that the rear seal is bad. To replace it you will have to take transmission out to do this and if this is the case and your truck has a automatic transmission have that seal replaced also. Yhe reason for this is if you have to take transmission out then you may as well change transmission seal also but remember only if the transmission is a automatic.....hope this helps and good luck....Please rate this post...

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.

Dear Calvin,

Just Have Your Front Crank Seal Replaced. The Water Pump Does not Need To Be Replaced At This Time. Try Taking It To Two More Mechanics. See what They Say. And Decide On A Fix.

Hope This Helps,

Alex :o)

OIL COULD BE LEAKING BY WORN VALVE SEALS AND WORN VALVE GUIDES.ENGINE BURNING OIL MORE LIKELY.IF ENGINE HAS OVER 100000 MILES ON IT.

usual cause is the rear crankshaft seal. Engine must be disassembled to replace. :o(

no they arent related, unless the engine crankshaft experienced extreme tempuratures from oil starvation. This mayhave caused the seal to expand and crack. Its possible but very rare!! Hopefully this helps!!

Hi,

If somebody told you that you have a main seal leak what they meant was the round seal that is around the circumference of the output shaft of the crank. This same output shaft is basically hooked up to the transmission, or through to the transimission through a clutch. Well after some time, the round seal, it looks something like a flat donut, leaks. Imagine stretching a small spring around a shaft of steel and wrapping the spring in rubber. It will stop the oil from leaking along the shaft and out of the engine. After wear and tear, it needs to be replaced.

If this is the case, well, given that you have not said what type of vehicle you have, you would need to either pull the engine out or drop or pull out the transmission to get at the shaft and replace the $10 seal part. A lot of work for a small item but it will continue to leak until of course you run out of oil and ruin the motor.

I hope this helps somewhat.

First you need to determine if the van is "burning" oil or "leaking" oil. If the exhaust is bluish in color, this is a good indicator that you are burning oil and you probably need a valve job. A common issue with vehicles this age is an oil leak around the valve cover gasket. Oil leaks and burns off on the manifold. If when you open the hood and smell a great deal of oil, this is more likely the cause of using so much oil. The best way is to inspect the engine compartment first. If you can't spot any excess oil there, get under the van and look for a leak near the oil pan, oil plug, or more forward toward the engine compartment. Hope you find this answer helpful. Best of luck.
Greg