Compression
05-02-03, 09:35 AM
#2
The Rotorheaded Geek
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I believe you use the lower spark plug hole, use a std compression gauge w/ the release valve open so you can see all three spikes of pressure.
05-04-03, 12:08 AM
#3
The AUTO DOCTOR
Join Date: Mar 2001
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wrong... u use the top and thats the way that you can get an ideabut its not to accurate... geta mazda compression test... best 300$ i have spent and its paid for its self already 
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