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compression test results for 1hz
Posted: Sat Oct 10, 2009 10:42 am
by brett131267
can anyone tell me if these results are okay for my 98 4.2l troopy,
cyliders 1,2,4,5,6 -300psi, cylinder 3-310psi. What should they be?
Posted: Sat Oct 10, 2009 2:23 pm
by cozzav8
Compression pressure:
IPZ and 1HZ
37.0 kg/cm2 (526 psi, 3,628 kPa) or more
1HD-T
35.0 kg/cm2 (498 psi, 3,432 kPa) or more
Minimum pressure:
IPZ and 1HZ
27.0 kg/cm2 (384 psi, 2,648 kPa) or more
1HD-T
25.0 kg/cm2 (356 psi, 2,452 kpa) or more
Difference between each cylinder:
5.0 kg/cm2 (71 psi, 490 kPa) or less
Posted: Sat Oct 10, 2009 3:11 pm
by ledgend80
did you try it with some engine oil in each cylinder and record what pressures you get
Posted: Sat Oct 10, 2009 7:36 pm
by bj on roids
doesn't sound good