I think if they are within about 15% of eachother is acceptable have you
done a leakdown check? Or if you pressurize the cylinders one at a time and
listen to the intake and exhaust for hissing and check any crankcase vent
for escaping air as well to see if its valves or piston/rings

On Jul 25, 2011 1:21 PM, "Rob" <becida@comcast.net> wrote:

A 75 psi difference in compression pressures would bother me, bother me a
lot.

Rob
becida@comcast.net

At  7/25/2011 09:47 AM, Jake de Villiers wrote:

> Does it crank fairly evenly?  That low cylinde...