Not saying it's the case here, but we've heard that story many times throughout the years... The cause being one of the intake manifold end stud lock washers dropped down the intake.well I finally got it running after 6 years of sitting and there is a pretty bad knock but it seems to be coming from the top end on the rear head with a single cylinder misfire is it possible that I have a collapsed lifter or sticky valves? Tell me if I'm wrong here but if it did bend valves wouldn't it have bent all of them not just 2-4 on one cylinder?
well I finally got it running after 6 years of sitting and there is a pretty bad knock but it seems to be coming from the top end on the rear head with a single cylinder misfire is it possible that I have a collapsed lifter or sticky valves? Tell me if I'm wrong here but if it did bend valves wouldn't it have bent all of them not just 2-4 on one cylinder?
Yes you’re more than likely to bend all the intake or exhaust valves on a bank of pistons if timing has jumped not just one cylinder, more like 2 valves on each cylinder of a bank.Not saying it's the case here, but we've heard that story many times throughout the years... The cause being one of the intake manifold end stud lock washers dropped down the intake.
Not sure what the first numbers are, but the last number on each rear cylinder is below lower limit of 115 psi on the turbo engines at coolant temperature of 176-203°F. Not knowing what engine temperature was and which way you tester is off, those numbers maybe within minimal limits but I’d expect the engine to still start at those compressions, maybe just not run at best performance. Also I don’t understand why you didn’t test front cylinders, jumped timing belt would affect front back also.Old compression tester is only 9 psi off so It looks like I'm probably due for a rebuild what do yall think
All numbers are compression numbers 1-6. The gauge read 9psi lower then actual pressure. engine was probably about 90f so it was cold drained the old gas out of it and haven't put any new gas back in to run it. pretty sure I'm just going to get some cash together and do a complete rebuild on it at this point. Any recommendations on where to get parts through I know of a few but haven't used any of them before. I've heard good thing about 3sx but there prices seem high compared to othersNot sure what the first numbers are, but the last number on each rear cylinder is below lower limit of 115 psi on the turbo engines at coolant temperature of 176-203°F. Not knowing what engine temperature was and which way you tester is off, those numbers maybe within minimal limits but I’d expect the engine to still start at those compressions, maybe just not run at best performance. Also I don’t understand why you didn’t test front cylinders, jumped timing belt would affect front back also.
Did you rent a bore scope to look around in each cylinder for something in cylinders as @RealMcCoy mentioned back in April, or visual evidence of valve contact in top of pistons as I was referring to back in April about damage?
Ok…. Now I understand, I thought top row was cylinder 2 with a reading of 85.1 – 110All numbers are compression numbers 1-6.