I did not check the gap on -every- valve. I suppose I should. I never fussed with the valve clearances during head removal/installation though. The one I did check was satisfactory. I'll do the rest though. Also, my gauge dropped to zero as soon as I unscrewed it so it should be ok for a leak down tester. --- In DMCForum@xxxxxxxxxxxxxxx, "Andrei Cular" <acular@xxxx> wrote: > 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@xxxx> > 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=869003089> 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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