I have just had some 'relative compression' testing done on the D4D (done by RACQ) and the results don't really make sense - unless of course there is an underlying issue.
Being a relative test, it assumes that even the reference cylinder is ok, results are:
Cylinder 1 = 100%
Cylinder 2 = 92%
Cylinder 3 = 85%
Cylinder 4 = 80%
I guess the concern I have is that there is a steady drop in the level of compression, which equates to about a 20% difference between cylinders 1 & 4. This seems excessive to me - does this indicate the potential for an underlying issue??
Basic vehicle details are:
2007 GXL
69,000km
About 12L/100km
Any thoughts or comments would be appreciated.
Cheers,
Chris.
Being a relative test, it assumes that even the reference cylinder is ok, results are:
Cylinder 1 = 100%
Cylinder 2 = 92%
Cylinder 3 = 85%
Cylinder 4 = 80%
I guess the concern I have is that there is a steady drop in the level of compression, which equates to about a 20% difference between cylinders 1 & 4. This seems excessive to me - does this indicate the potential for an underlying issue??
Basic vehicle details are:
2007 GXL
69,000km
About 12L/100km
Any thoughts or comments would be appreciated.
Cheers,
Chris.
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