Chris.air

iTrader: (1)

Hey, was getting oil thru my inter cooler thought at first it might be turbo removed all looks to be ok. Was advised to do a compression Check which I done last night.
Tho not sure if the results are good or bad.

Piston 1 was 139psi
Piston 3 was 130psi
Piston 2 was 128psi
Piston 4 was 140psi

Which gives 12psi from worst to best would these results be something to worry about?

Next step is to fit a catch can but reluctant to incase it's hiding something more serious.

Any advise appreciated thanks.

piehole1983

iTrader: (7)

I'm not sure what the acceptable pressures and differences are for these engines but others I've worked on I've seen acceptable differences of up to 14psi in the workshop manuals. I'm sure the more knowledgable folk will be along soon to give you a better idea.

Davros 1979

iTrader: (56)

Its normal to have a small amount of oil in the intercooler if you dont have a catch can fitted.

The breathers feed back into the intake and contain oil vapour.

Chris.air

iTrader: (1)

Thanks i would just like to know what the tolerances are could the 128 be bad rings?

Dude it was a lot of oil that was going thru the intake so much so that it was coming out the dump valve and running down the bulk head.
Thanks

piehole1983

iTrader: (7)

I'm honestly not sure what would be acceptable at all. You seem to have very similar low readings on two cylinders. It may be something more sinister as you say. Maybe have a search through other threads about oil consumption and compression and see what they say. I had read a couple of threads recently where cracked pistons were to blame.

4u2nv2

anything below 120 is low 150 good, was the engine warm or cold when you did the test. is the oil level correct.

Chris.air

iTrader: (1)

Stone cold will do a warm test later and I think the oil might be a little low at a guess I would say not much below the second hole.

Thanks

piehole1983

iTrader: (7)

You really need to do it at operating temp mate with the throttle wide open too.

Chris.air

iTrader: (1)

Done the throttle open looks like I'm going to have burny arms tonight