I have known excess pressure in the crankcase be caused by worn piston rings
allowing excessive blow-by. I suggest you check the compressions.
PaulH.
C A G wrote:
>
> Dear Experts,
>
> My wife and I are the happy owners of a 1975 Midget with an unusal
> problem. It continues to push up the dipstick just enough to allow oil to
> leak out. Aside from the mess it leave on the driveway it is quite
> embarassing to have this stream of white smoke following you on the
> roads. Not wanting to promote the negative image of leaking MG's I would
> love to find the cause of the problem. It has a rebuilt 1500 with a Weber
> DGV and runs like a top.
> Thus far we have replaced the felt gasket that forms the seal at the top
> of the dipstick (just below the loop), checked the crankcase ventilation
> hoses for blockage, and put a sight bend in the dipstick itself so it
> will seat better in the tube. All of these modifications have helped, but
> not solved the problem.
> What could be causing the pressure in the dipstick tube? Yesterday I
> tried one more fix, a spring attached to the motor mount to hold the darn
> thing in!
> Thanks in advance for any help.
>
> Chris Gorman
> 1975 Midget (top down most of the year!)
> 1970 MGB (waiting to be restored)
> 1968 Mustang (first car)
> 1994 Explorer
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