Valves still leaking after 2 machine shops did valve job
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The heads were run for about 20 hrs. The motor acted lazy getting on plane and the computer was throwing a code, A vacuum test showed it was down on vacuum compared to the other motor. In my experience, leaky valves don't fix themselves.
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If the machine shops working on your heads use grinding stones to grind the seats thats your problem. Probably ground to death and the margins are gone. Probably all out of shape. Take them to a shop that has a serti seat cutter problem solved.
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Thank you Janet - Finally some good advise.....
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No one should still be using stones to grind seats. I learned how to use cutters in high school almost 20 years ago