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I have a 1994 Nissan Sentra which appears to have a leak in the rear main seal and most recently has a slipping clutch (will barely make it up a hill). Is there any way to adjust a clutch or does it simply need to be replaced? Should these both be done at the same time?

The rear seal is causing the clutch slippage from all the oil that is getting on It.! Replace both clutch and pressure plate, throw out bearing and if it has a pilot bushing as well. Make sure the flywheel has been “machined” to remove any “hotspots” on it. (This will insure a smooth operation of the clutch; this will keep you from getting “Clutch Chatter”) The output shaft seals for the axles need to be replaced as well. Replace the rear seal and make sure the PCV valve is working properly on this model. In a lot of cases the PCV (positive crankcase ventilation valve) is what caused the problem in the first place! The PCV valve has plagued a many a customer with a blown rear seal. The excessive pressure from combustion chamber blow-by gases takes the path of least resistance. In most cases it seems to take one of the hardest seals on an engine to replace.


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