Question about 1993 Ford Probe
A compression tester is not that expensive (under $50)
You take out the spark plug (preferably all of the spark plugs at the same time, make sure to mark which wire goes to what cylinder), screw the tester in, and turn the motor over a few times with the key (you do not want to start the motor, just crank it over a few times).
Write down the results of the test.
Repeat the procedure for each of the 4 cylinders.
Once you have the results, compare them to factory specifications (they should be at least 135 to 165 lbs each).
The head gasket is between the cylinder block, and the head of the motor.
Replacing the head gasket is a fairly major job. You have to tear down most of the motor. If you have never done major motor work, it is probably best left to a shop to do the job.
I can't say exactly what it would cost, but it is not going to be inexpensive.
And this is still hoping that it is just the gasket, and not a major break in the head or the block.
If the head or the block is cracked, you will be looking at replacing the motor.
But from everything you mentioned in the original question, this is a big job.
Posted on Jul 29, 2008
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Posted on Jan 02, 2017
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