paceo

iTrader: (5)

hi guys, ive got a standard compression tester for my golf vr6, now obviously this wont determine if its a worn cylinder head or bottom end as the car is a bit smokey (blue - oil)

with a compression tester i will do the test first when the engine is warm, then add a bit of oil to the cylinder again, if it rises a lot i believe thats the case for a worn piston ring? how much oil in ML do i need to add?

or has anyone got a leak tester local to bromley in kent who wants to pop over and earn some ££

iansoutham

I normally put about 1 teaspoon in per cylinder personally.

paceo

iTrader: (5)

well i added just under a tablespoon of oil and most of the readings went up by about a 20psi increase

some people are saying two squirts of oil from an oilcan!

iansoutham

Did they all increase by about 20psi or did one increase significantly more than the others?

paceo

iTrader: (5)

roughly all 20-22psi per cylinder! the vr6 has 6 of them!

piston 2 increased a lot first of all (258 psi) as i put way too much oil in there (2 tablespoons roughly - oops) so i burnt that oil off and started again with just under a tablespoon in each cylinder!

she is still kicking out a fair bit of blue smoke on idle when i start it from cold, and it will kick out blue smoke till the fans kick in, drive it and leave it on idle when warm and you cant see a lot of blue smoke! random!

piston 1 - spark wet with oil - dry test 188, wet test 203

piston 2 - mildly moist spark - dry test 188, wet test 203

piston 3 - moist spark - dry test 180, wet test 200

piston 4 - moist spark - dry test 179, wet test 208

piston 5 - moist spark - dry test 170, wet test 195

piston 6 - moist spark - dry test 180, wet test 198