Marmot MB
Active member
I have searched here and yet to find a straight forward answer on Compression PSI New and Compression PSI that is concerning.
I am sure someone here knows the answer
What is a NEW M8 Compression value in PSI ? my sled is a 2008 EFI
what is a bottom value that would be concerning ?
I have seen a few times that a 10% difference between cylinders is acceptable ?
I have 3586 KM and 148 Hrs on this sled.
I tested as below and had:
Left cylinder 117 cold / 113 hot (of note these are the exact same values I had last year when I tested)
Right cylinder 121 cold / 119 hot
Testing Procedure:
One plug out, compression tester in plug hole, throttle held fully open, start run switch to off, key off.
5 - 7 pulls of cord when cold
5- 7 pulls of cord when hot.
I am sure someone here knows the answer
What is a NEW M8 Compression value in PSI ? my sled is a 2008 EFI
what is a bottom value that would be concerning ?
I have seen a few times that a 10% difference between cylinders is acceptable ?
I have 3586 KM and 148 Hrs on this sled.
I tested as below and had:
Left cylinder 117 cold / 113 hot (of note these are the exact same values I had last year when I tested)
Right cylinder 121 cold / 119 hot
Testing Procedure:
One plug out, compression tester in plug hole, throttle held fully open, start run switch to off, key off.
5 - 7 pulls of cord when cold
5- 7 pulls of cord when hot.