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International Automotive Technicians Network
Re: 5 second compression test, no equipment required
Posted to Technical Tips Forum on 2/27/2007

It has nothing to do with "pro". It has to do with fast. Car comes in w/misfire. Disable PCM or ign and crank it. BAM, you know if its mechanical or not. Immediately you have direction. Now you can hook up equipment and find which cyl, whats the cause, etc.

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