Rodneya Posted April 8, 2009 Report Posted April 8, 2009 If the threaded end of the compression tester is not as long as the spark plug, how much lower will it read. I can not find my tester, and borrowed one with threads that are about 1/3 the length of the spark plug. Quote
sleeper06 Posted April 8, 2009 Report Posted April 8, 2009 i have Two testers , one is the rite length, I have tried both and noticed minimal diffrence,0-6 lbs depending on motor,im sure other people will have something to say but,this is what I found Quote
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