Date: Tue, 23 May 2000 08:39:57 -0700
From: "Joe Beets" <1nopsamgt;
Subject: Re: Diagnosing compression test

Try pulling the wire off each cyl plug in turn and starting. If this has the same effect in your idle for all four, your comp problem is not the cause. If no. 3 cyl shows substantially *less* change than the others when disconnected, it is related. "Andrew" <> wrote in message news:8gdgfv$ber$ > I've been suffering from an erratic idle ever since I bought my 89 900t a > year ago. A dry compression test has shown that no. 3 cylinder is reading 8 > bar (versus 10.3 bar for the other cylinders). A wet test brings all four > cylinders up to 14 bar. Any suggestions about what mey be the cause? A > broken piston ring maybe? Sounds serious whatever. > Cheers, > > Alan. > >

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