Q: Why am I getting low compression?

asked by on April 26, 2016

i did get the head surfaced and "only the head surfaced" I am getting 85psi in cylinder 1 125psi in cylinder 2 120psi in cylinder 3 125psi in cylinder 4. why would I get low compression all of a sudden? should I try the test with air tool oil? I have not changed the oil will that make a dif? thank you so much for your time.

My car has 207000 miles.
My car has an automatic transmission.

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