Dry:
Cyl# 1: 120
Cyl# 2: 151
Cyl# 3: 125
Cyl# 4: 102
Wet:
Cyl# 1: 200
Cyl# 2: 235
Cyl# 3: 155
Cyl# 4: 139
all of them are supposted to be atleast 150 or so.
Bad rings?
the engine only has 92k miles on it, its 42 years old though. lol
jetfan2
Favorite Answer
Bad rings or burnt valves, burned valves will cause compression loss also. If it still runs decent keep driving it. If it does not run well and burns oil and such and you are rebuilding it then all will be good when you are finished.
Leslie R
All are within the variable wet, not dry. I would say with pressure up on a wet test it's rings. Oil temporarily seals the rings not the valves. Is the engine cold or warmed up this can also cause a variance in your readings. Also timing must be dead on.
tony D
if there's some pressure on the oil filler cap openings,when you remove it while idling the engine,surely it is the rings on #3 & #4.we call that blow-by.(and some smoke is coming out from that openning where you pour oil). But if not, then check around the cylinder head for oil leak or moist,if you see some ,probably a gasket problem.If these all okey, then probably the valves.try using that gas treatment additives and check spark plug ,if fully tighten,you know....you might over look some simple things like that sometimes....good luck!
Charlie
Could be or leaking around valves, or weak head gasket. Carbon build up on valve seats can cause leaking compression as valves are not seating correctly. Run a good fuel injection cleaner through and retest.
Edit: What's the engine mileage?
Anonymous
Likely bad rings. Possibly a bad valve, too.