[DMCForum] Re: tone L.O.C.

["cruznmd" <racuti1@xxxxxxxxxxxx>]

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.
> >



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