-----Original Message-----
From: Paul Hunt <paul.hunt1@virgin.net>
>
>The other plugs should be *in* for a compression test. Cranking speed is
>typically 275 rpm.
Huh? Unless you're trying to rotate the smoke in the battery or use the
starter to warm the garage, why would you want to have the plugs installed
for a compression test?
Plugs out, coil output grounded, and WFO throttle is the way I've always
done it.
Bob Allen, Kansas City, '69CGT, '75TR6
"Last night I observed that 150psi indicates 7.5 (cold) compression on my
gauge."
|