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I have 1995 nissan Quest and there is an oil leak near the front main seal so I've replaced it twice and nothing seem to stop this leak. I wondering is their some step I am missing ?
You have replaced it twice, perhaps the fly wheel is cutting it or inside the part that connects to the crankcase is an "O"Ring or you have to inspect the fly wheel look for cracks, inspect the seal that You all ready removed
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1995 Tracker would have a timing BELT. Normal oil leak points (in order) on a Suzuki G16 engine are the distributor base (rear of motor), valve cover (top of motor), front main seal (behind lower timing belt cog) cam seal (behind the upper timing belt cog) and rear main seal. (behind the flywheel). I'd suspect the front main seal or cam seal. I use foot power to help find oil leaks.
Need to find out where leak is from. Kinda sounds like a crankshaft main seal, front or rear of engine. Front one is pretty easy to change, but rear main seal leak means you have to drop transmission to get to it. But it could be another seal or gasket. Can you tell about where leak is, from oil spills on ground where parked? Look at engine. Is oil seeming to leak from bottom end or upper engine. May need to wipe or clean it off to see where fresh oil leak develops. A mechanic may need to put it on a car lift to pinpoint the leak. Good luck.
OIL LEAK COULD BE COMING FROM OIL FILTER SEAL. OIL LEAK FROM THE REAR OF ENGINE COULD BE REAR MAIN OIL SEAL.LEAK IN THE FRONT OF THE ENGINE COULD BE FRONT CRANKSHAFT TIMING COVER SEAL LEAKING OIL.
It may be leaking from the transmission pan gasket or either of the transaxle seals. If it's leaking from the middle front of the transmission, it could be the front pump seal, if it's that, you'll have to remove the transmission to replace that seal. They others can be done with the transmission in the car.
u don't have to remove the engine however you must remove the transmission and flywheel, you will also need the Nissan special tool to install the new full circle seal or it will leak.
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