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LONGHAIR · 10-29-2008, 07:48 PM

It is best to remove all of the sparkplugs. That way you are not fighting against the compression of the others. Also block the throttle wide open....and yes, disable the ignition.

10-29-2008, 07:48 PM	#2
LONGHAIR just can't cover up my redneck Join Date: May 2004 Location: Columbus OH Posts: 11,414	Re: compression test It is best to remove all of the sparkplugs. That way you are not fighting against the compression of the others. Also block the throttle wide open....and yes, disable the ignition.