[SIZE=+0]i removed the intercooler pipe that joins to the Manifold/Plenum and in both the pipe and plenum there was a fair bit of oil more than there should be??? does this mean i have a knackered turbo or something more serious? been smoking for a bit which has been puzzling because it doesnt do it all the time. no oil loss cause i check every week. drives,starts and ticks over perfect. its not the oil seals on the valves and not the pistons so the only thing it could be is a dodgy turbo i think??????? any help or ideas would be great thanks.[/SIZE]
Help
- Thread starter icecool70
- Start date
...or you've got the crank case venting into the inlet pipes and it's drawing oil into them.
Can you get a 'sniffer' test for the crank case; I'm wondering if you've got a slight exhaust leak from the head gasket and it's pressuring the crank... but to be quite honest I don't know how likely that it, or if you can use a sniffer for that (it's meant to check for exhaust gas in the cooling system).
Can you get a 'sniffer' test for the crank case; I'm wondering if you've got a slight exhaust leak from the head gasket and it's pressuring the crank... but to be quite honest I don't know how likely that it, or if you can use a sniffer for that (it's meant to check for exhaust gas in the cooling system).
Got the crank case blocked at 1 end and a oil catch tank on the other. i no theres a little play in the turbo because i checked that a while back....play both ways but how much play is to much play or is any play 2 much? really starting to wind me up now. where do you get a sniffer from might be worth checking to rule that 1 out orrrrr not?
GTiR-Aholic
New Member
You shouldn't have any side-to-side play. In-And-Out play is normal 1-2mil.
gtirx2
Active Member
I always thought it was the other way around unless we are getting muddled up?
If you hold the shaft with your finger tips and push it in and out there should be no more than 0.013mm-0.097mm by going by the manual.
1-2 mm is massive amounts of play, altho the turbo will still proberly work ok with this sort of play i would of thought the thrust bearing would be very worn indeed with that much play.
Where as i thought if holding the shaft with your finger tips and moving from left to right there is always ment to be a small amount of play due to the way the thrust bearing is designed,but again no where near 1-2mm?
gtirjoey
Member
so does everyone else on the planet:doh:
GTiR-Aholic
New Member
No you're right, 1-2mm is ALOT of play if you're using some kind of a dial indicator to measure the play.
I said 1-2mm because if I was to say the measurements we go by which is 0.15mm side-to-side and 0.08mm in-and-out then in your head you're gona think well that's practically zero play either way.. correct.
But when buying a turbo, you'll pickup a second hand one and fair enough find that side-to-side it's nice a tight but you've got a slight bit of play in-and-out... okay technically this isn't PERFECT but it will no doubt do it's job providing it's not a lot of play.. you've really gotta get your fingers on a few turbos before you can tell what's a lot and whats not (unless of course you've got measuring tools).
So although you should find less play in-and-out it's almost always a lot worse when you've got too much free play side-to-side because if you're fins get damaged then it's a tad more expensive than just seals & bearings ;-) lol
Last edited:
gtirx2
Active Member
I get what your saying mate,and indeed when feeling by hand a small amount of play can feel like a good couple of mil when in fact its proberly alot less.
Also agree that a lot of left to right is bad as it will hit the housing and send metal filings through the intercooler and into the engine if you are unluckey.
Also agree that a lot of left to right is bad as it will hit the housing and send metal filings through the intercooler and into the engine if you are unluckey.
Guys i see what your saying but went out in it last night and had a mate stay behind me when i booted it and he said that the only time he noticed any smoke was when i changed gear not when it was boosting,do you think its still the turbo? maybe the seals are on there way out just not quite there yet.
the other thing i was thinking because it doesnt smoke all the time could it be where the turbo gets hot that it starts to smoke and when it cools down the smoke stops???????
the other thing i was thinking because it doesnt smoke all the time could it be where the turbo gets hot that it starts to smoke and when it cools down the smoke stops???????
Same as fella for the last 4 years seven months, has not blown up yet thou, so would not worry to much
gtirx2
Active Member
It does sound like the turbo.
Try driving along in 2nd or 3rd rev it into the high revs 6000-7000rpm then de- accelerate for a couple of seconds then come back on the throttle and see if it smokes.If it does it is proberly the turbo seals getting tired.