I carried out a cold, dry compression test on my TT tonight, seeing as I was replacing the spark plugs anyway.
The front two cylinders gave about 110 to 113 psi
The middle two cylinders gave about 96 psi
And the rearmost cylinders were better at about 120 psi
Not great figures but the car runs well, boosts well and has only just started giving me a rough idle until it warms up. 94,000 on the clock and it appears to have been reasonably well looked after.
Looking at previous forum posts on compression test results, I was expecting a better set of results than I attained.......:huh:
Mind you, this is a borrowed compression gauge and I can't vouch for it's accuracy.
Any ideas or do I put the new plugs in, go for a drive and then retest when warm/hot?
Hi all,
I carried out a cold, dry compression test on my TT tonight, seeing as I was replacing the spark plugs anyway.
The front two cylinders gave about 110 to 113 psi
The middle two cylinders gave about 96 psi
And the rearmost cylinders were better at about 120 psi
Not great figures but the car runs well, boosts well and has only just started giving me a rough idle until it warms up. 94,000 on the clock and it appears to have been reasonably well looked after.
Looking at previous forum posts on compression test results, I was expecting a better set of results than I attained.......:huh:
Mind you, this is a borrowed compression gauge and I can't vouch for it's accuracy.
Any ideas or do I put the new plugs in, go for a drive and then retest when warm/hot?
Cheers - Andy