496ho rear main seal leaking a little oil
11-22-2011, 08:52 AM
#21
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sorry to hijack this thread, similar topic though. midway through the season I noticed a slight amount of engine oil in my bilge after a weekend of use or a good run. Probably about three tablespoons worth of oil. Cant figure out where it is coming from, engine performs well also and no noticeable change in oil level. It is a 496 with about 250 hours. Any ideas on where to check? Oil pan, drain tube seal, remote filter loose?? I checked the oil drain hose itself, it seemed to be in ok condition with no cracks or leaks. Thanks for any help!
11-22-2011, 09:07 AM
#22
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Joeflint:
If this is engine oil, then try checking the oil filter/cooler adaptor at the rear left lower side of the block and the remote oil cooler and filter line fittings for being loose. On a few 496's some engines have developed some loose oil pan bolts in a few rare cases. Check those as well as around the front crankshaft/timing cover seal as these can sometimes develop a leak. Rear main seal leaks are rare due to the excellent design of the two piece real main seal.
Best Regards,
Ray @ Raylar
If this is engine oil, then try checking the oil filter/cooler adaptor at the rear left lower side of the block and the remote oil cooler and filter line fittings for being loose. On a few 496's some engines have developed some loose oil pan bolts in a few rare cases. Check those as well as around the front crankshaft/timing cover seal as these can sometimes develop a leak. Rear main seal leaks are rare due to the excellent design of the two piece real main seal.
Best Regards,
Ray @ Raylar
Last edited by Raylar; 11-23-2011 at 10:39 AM.
