After having my '87 XJ6 engine rebuilt a few months ago, and it's running great with idle oil pressure ranging from 40-45 pounds and freeway at 65 pounds, I notice a little oil leak, a drop or two, after sitting over night. I am told that this is normal for this 1940's design engine. It seems to be around the oil pan area and not the rear main seal. I will add dye and have it checked after more driving. I am disappointed as I expected the rebuild to leave me with a dry engine. I run Valvoline VR-1 20-50 conventional oil. Perhaps I am being unrealistic about not having oil seepage? Any suggestions to correct the problem?

Scott W. Moseley

Submitted by wljenkins@usa.net on Sat, 08/30/2008 - 18:23

You need to tell us exactly where the oil is coming from. Jack it up and look or bring it somewhere and put it on a lift.

No need to add dye, you'll see where the oil is leaking from if you look for it.

Submitted by smose2400@sbcg… on Sat, 08/30/2008 - 16:22

I had the car checked by the restoration shop last week and they discovered a leak on the "idiot" light sensor. This part was replaced, but I think some new generic parts may not be the best. In any event, we'll see if that sol ves the problem.

Thanks,

Scott

Submitted by smose2400@sbcg… on Sat, 08/30/2008 - 16:21

Edited on 2008-08-30 16:22:04

I had the car checked by the restoration shop last week and they discovered a leak on the "idiot" light sensor. This part was replaced, but I think some new generic parts may not be the best. In any event, we'll see if that solves the problem.

Thanks,

Scott

Submitted by bonnettoboot@e… on Sun, 07/20/2008 - 19:32

My advice would be to touch nothing and take it back to the rebuilder, There should be no leaks after a rebuild. did your car have the "tuftrided" ( I think) light weight crankshaft? These were known to warp, destroying the rear main seal very quickly, the only real answer seemed to be fitting an earlier heavy crank!

Submitted by dougdwyer1@com… on Sun, 07/20/2008 - 08:20

Its true that these engine are known for being a bit leaky but I would have expected at least a few months use without leaks after a rebuild, especially with use of more modern gaskets and sealants.

Anyhow, make darn sure the breather system at the front of the engine is clean, including the pipe that runs down to the throttle body. If it is partailly clogged then the crankcase pressure will cause (or worsen) a leak

Cheers
DD