They probably ARE equally toasted. Most of us are used to racing engines,
but high mileage car engine fail in a much more civilized manner.
Compression stays okay, but the rings are stuck in their grooves with gook
(technical term) or they've lost most of their spring tension and the oil
rings aren't working either. You get lots of blow by and that makes the
crankcase pressure climb. If you do a leak down test it might be more
obvious.
I'd say it might be oil getting past the guides, and it might be, but your
crankcase pressure issue makes it more likely to be rings.
-----Original Message-----
From: WEmery7451@aol.com [mailto:WEmery7451@aol.com]
Sent: Monday, August 07, 2006 8:01 PM
To: Bill Babcock; fot@autox.team.net
Subject: Re: [FOT] Color Tune & MG Ideas
In a message dated 8/7/06 9:26:55 AM Pacific Daylight Time, BillB@bnj.com
writes:
<< Sounds like the rings are toast. >>
If the rings are toast, they must all be toasted by the same amount. Every
time I determined this on other cars in the past, there was always some
variation of compression in each cylinder. I am sure that the rings have
seen quite a bit of ware, but the compression on all four cylinders is still
in the acceptable range.
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