On my engine with only 20k miles half the valves were fine 2 or 3 were actually staying open a bit. But if your gage dropped when you unscrewed it I wouldn't trust it to give you the correct pressure. The reason they put a check valve in is to capture the max pressure and hold it. Andrei ----- Original Message ----- From: "cruznmd" <racuti1@xxxxxxxxxxxx> To: <DMCForum@xxxxxxxxxxxxxxx> Sent: Monday, August 04, 2003 7:38 AM Subject: [DMCForum] Re: tone L.O.C. > 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. > > > > > > > To unsubscribe from this group, send an email to: > DMCForum-unsubscribe@xxxxxxxxxxxxxxx > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > Yahoo! Groups Sponsor ADVERTISEMENT <http://rd.yahoo.com/M=194081.3551198.4824677.1261774/D=egroupweb/S=170512 6215:HM/A=1663535/R=0/SIG=11ps6rfef/*http://www.ediets.com/start.cfm?code= 30504&media=atkins> click here <http://us.adserver.yahoo.com/l?M=194081.3551198.4824677.1261774/D=egroupm ail/S=:HM/A=1663535/rand=657975299> 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/> .
<<attachment: winmail.dat>>