RoyM wrote:That is the only thing left.
KE4AVB wrote:31P777-0296-E1
You should only have 70-90 psi with the ACR working.
It probably either the valves are out adjustment or the ACR on the camshaft has failed. 793880 camshafts are bad for this to happen to them. Non invasive test consists of the checking the valve clearances and looking for the ACR bump on the intake valve as the engine approaches TDC compression stroke.
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