VR6 Intermittent Burning Oil Woes.....Page 3.

[Gti_Jamo]

Remember folks

The Tshirt Knows... How to Diagnose...


 

 

Diagnose this please....

[tshirt2k]

Did you do a wet compression test?

[Gti_Jamo]

Did you do a wet compression test?

No but only because i had nothing suitable to drop some down but will get one done. I take it i should be looking for an even rise in compression?

[tshirt2k]

It will rise, but if its alot then it should point to rings. It seems like i could be the stems though, or you could have worn valve guides causing excess movement on the seals. Can't remember what you did regarding head. Is it the original?

[Gti_Jamo]

I believe so...i checked the play in the guides and were within tolerance but there was wear there. Best just get them done when the heads off though.

[Wayne]

I would say you have a stem seal or valve guide problem tbh.

[gazareth]

its a bit of a runt that eh. having to strip it again. maybe there is oil getting in from chain area. which might explain the previous head skim. I would check the surface of the block in that area very carefully for some kind of damage/crack. but check the stem seals on that cylinder first before you pull head. maybe the seals had come off before you bought engine and then it could have happened again now.

[Gti_Jamo]

I dont mind taking the head off again as it easier than pulling the engine out. Its just the money i need to spend on parts and fluids again. But ive come this far with it i'll get it done. Funds ain't great, but thats only because i spend it all on fuel and oil. With the inlet manifold off, by rights i should see traces of oil on the inltet valve stem. That will be the first thing I take off. But i'll monitor it over the next few days. I've got the dash to take out once this is sorted as the foam on my heater flaps keeps hitting me in the face. After that i've more or less got a perfect mk3.

[tshirt2k]

I believe so...i checked the play in the guides and were within tolerance but there was wear there. Best just get them done when the heads off though.

Not sure how the vr6 guides and stems are but at120K on my ABF there was alot of movement of the exhaust valves when checking mine half way down the valve. Had to replace all 8 exhaust guides. Also when fitting stem seals i had to puish them on hard with a 10mm socket.

[gazareth]

I dont mind taking the head off again as it easier than pulling the engine out. Its just the money i need to spend on parts and fluids again. But ive come this far with it i'll get it done. Funds ain't great, but thats only because i spend it all on fuel and oil. With the inlet manifold off, by rights i should see traces of oil on the inltet valve stem. That will be the first thing I take off. But i'll monitor it over the next few days. I've got the dash to take out once this is sorted as the foam on my heater flaps keeps hitting me in the face. After that i've more or less got a perfect mk3.

lol that darn foam. I always used to wonder where that was coming from on my old mk2. until the heater stopped blowing hot and I discovered the really bad design of the flaps inside the heater box. yeah if you have oil on the inlet valve then you can be pretty sure its coming down the guide. but the petrol would wash a lot of it off. why don't you just rebuild the head off your old engine and fit that? maybe clean out the ports a bit while your at it.