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I have a 93GT with 100,000 miles. I did a compression check and i was trying to find out what is good and what means it's wore out. The Ford dealership was of no help.

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the Ford I worked at, as well as my father, told me that anything above 155 is good. Normal is around 160. Anything above that, especially with high miles is good. I did one on my car, and the average was 164. My car has 94,000 on it. Oh..and when checking the cylinders...make sure that there is no more than a 10% variance between cylinders.
 
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