Did you ever check gap on your valves? The low compression could be do to a valve not seating 100%. Most compression gages have a check valve which makes them useless for a leakdown tester. I have one that came with two different hoses, one with a valve for compression and the other with an air fitting for leakdown. Andrei ----- Original Message ----- From: "cruznmd" <racuti1@xxxxxxxxxxxx> To: <DMCForum@xxxxxxxxxxxxxxx> Sent: Monday, August 04, 2003 7:08 AM Subject: [DMCForum] Re: tone L.O.C. > Jim, > > Thanks for helping square me away on the oil pump issue. I was > starting to get concerned. > > I did find the real numbers in the Volvo manual the I borrowed from > Mike Cohee. > > 114-156 psi while HOT, and a cranking rpm of 250-300, throttle wide > open. > > I believe that your compression gets better as things heat up and > seal up. If that's true then I should have adequate compression. > > Consider this; > > I think I'm making half the cranking rpm's specified and the engine > is cold, so if I were able to speed up the engine and had it warm I > would probably meet or exceed 114 psi. > > Someone also suggested a "leak down test". Wouldn't the fact that I > left the gauge hooked up to the cylinder and saw no drop in pressure > satisfy this? I stood around for about 10 minutes wondering what to > do next, and there was no drop in pressure. > Yahoo! Groups Sponsor ADVERTISEMENT <http://rd.yahoo.com/M=259538.3625325.4914071.1261774/D=egroupweb/S=170512 6215:HM/A=1695348/R=0/SIG=11u38u3s2/*http://hits.411web.com/cgi-bin/hit?pa ge=1374-105951838331032> click here <http://us.adserver.yahoo.com/l?M=259538.3625325.4914071.1261774/D=egroupm ail/S=:HM/A=1695348/rand=186397956> To unsubscribe from this group, send an email to: DMCForum-unsubscribe@xxxxxxxxxxxxxxx Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> .
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