[TR] engine compression results

Randall tr3driver at ca.rr.com
Sun Dec 16 20:43:10 MST 2007


> as soon as I stopped 
> turning the engine over the gauge just sank to zero.

John, I find this statement very puzzling.  It sounds like your compression
gauge is defective ... it should always hold the peak reading as the
cylinder normally has no pressure (while cranking) for most of the cycle.

As noted, putting air pressure on the cylinder will let you listen for the
leak in the intake, exhaust and crankcase.  However, I think you've already
got enough information; so if you don't have the tools on hand to do the
pressure test, I'd just go ahead and pull the head off.  Most likely, you'll
also wind up removing the piston for #4, but removing the head is the first
step anyway.  And the good news is that the piston will come out as well
without having to remove the engine from the car (or pull that darned front
apron).

Randall


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