Jon TDI 0 Posted April 8, 2003 I've just had my G60 serviced & the garage has advised me that the compression is low & it's burning a bit of oil. Each cylinder is about 95-110psi. What's a good pressure for the G60 to put out & what does my low compression tell me? Quote Share this post Link to post Share on other sites
VR6 0 Posted April 8, 2003 Replace piston rings/valve seals etc? (not really an engine man so I would wait for better offers if I were you! :)) Quote Share this post Link to post Share on other sites
qrugh 0 Posted April 8, 2003 According to the Bentley guide (section 15.4) the compression on the G60 (PG) engine should be between 116-174psi when new with a permissible difference between all for cylinders of 43.5psi and a wear limit of 87psi. Replacing your piston rings would be the first job IMO - it can even be done yourself if you are mechanically minded. (However, I have never done it on a car for which a Haynes manual was not available so don't tale my work for it!) If that doesn't fix the trouble then you need to look at the head I guess (not good news). Quote Share this post Link to post Share on other sites
Supercharged 2 Posted May 6, 2003 Just had mine done, 2 were 130 and the other 2 140 - which the garage said was spot on! Quote Share this post Link to post Share on other sites
