Well i have been fighting a bit of a stumble and misfire across rpm range. Have just completed replacing rear mainseal both upper and lower halfs believe it or mot was successful in no more leaks. Replaced fromt crank seal. Just upgraded cooling system with rad from coolcat. New fans. Installed dual temp gauge and senders. Engine temps stay equal on both sides when running or idleing.
Engine did get hot prior but not loosing any coolant have tested for ex gas in coolant. None.
Decided to do a compression test again and my readings on the a bank have deteriorate since last check in april. See image.
Wet comp test on low cyls does not make really any change < 5 psi.
Plan on doing a leakdown test but my regulator on mine just died so new one on the way.
I noticed when checking timing that it seems to have more fluctuation than prior but just had dist also sent out and curve reset and vacuum adv put in. So another variable. Bit that in and of itself has no bearing on mech compression
Question im wondering if some how a bank cam timing has changed some how. I guess i can pull covers off and get cam gauges and see if alignment is correct at TDC. Anybother way to check integrity say of tensioner ?