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Discussion Starter · #1 ·
i recently tested my compression in my '92 GT,

and i was curious about what other GT owners have read on each cyl.
 

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Discussion Starter · #4 ·
cyl 1 - 160
cyl 2 - 168
cyl 3 - 130
cyl 4 - 168

i did a wet test for cyl 3 and it went up to 155, i guess i better not drive it hard til i have i time to change the rings.
 

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Do you have to top up your coolant periodically?

The wet-test result should have taken you above the dry-test results for the other three cylinders.

I'm a bit concerned you have a head gasket problem. All things being equal, rings should wear more or less evenly from cylinder to cylinder (unless you have a broken ring in cylinder #3).
 

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Discussion Starter · #6 ·
since the 3rd cyl was lower than the other three for the dry test, that cyl was the only one that i wet tested.

i dont have to fill up my coolant at all, i recently checked my coolant, the pressure in the radiator, and the cap, etc., all is fine.

i guess the rings in cyl. 3 are wearling out more than the others

anybody else have compression numbers for their escorts?
 

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My 3kGT runs 185 +/- 3psi in all 6.

Gets 30.1mpg highway at 85mph too. Not too shabby for something that weighs 3170.
 

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I highly recommend a leak-down test to determine the problem with cylinder #3. This will pinpoint the source of your leakage. A shop can do this for you quickly.

As mentioned, the wet-test compression result for cylinder #3 should most definitely be higher than the dry-test result for the other cylinders. The wet-test result should essentially compensate for ring problems and it hasn't completely done that.

You cylinder-to-cylinder dry-test results are worth being concerned about.
 
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