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  1. 7

    Rings or head gasket ?

    Gents , thanks again for the discussion, to clarify the leakdown was 35% that is losing 35% holding at 65% if you're familiar with the typical HF gages I'm still at the edge of the green "low" range, also the piston was probably at BDC , but again all valves on base circle. I've not done the...
  2. 7

    Rings or head gasket ?

    Ok then , just dug out the leak down tester from the bottom of the tool chest ( long time since I used it) . Quick check show 35 % leakage or per the gauge on the edge of "low " almost "moderate". Also listening- the hissing is coming through the dipstick tube and oil fill neck i.e. crankcase...
  3. 7

    Rings or head gasket ?

    Gents thnx for the discussion. @Andrey I'm thinking a hole in a piston would give 0 psi on the compression check? @GlassTop09, yes valve cover pulled on drivers side, 3x lobes are somewhere on base circle although not sure #6 was at TDC , not sure it would matter either. If piston is...
  4. 7

    Rings or head gasket ?

    Thanks, that's next, curious what results am I looking for and what will that tell me?
  5. 7

    Rings or head gasket ?

    Hey folks new to this forum and need some advice on next steps. Back in Jan , I bought a 05 mineral grey GT and drove it from Pittsburgh to Philly where I live. Car had a few owners but only 53 k miles. The seller seemed like a trustworthy guy, but since then I'm convinced this private pilot...

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