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Blue smoke, now nothing? Edit: an update


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Got a weird one here, now since buying the car in October I've had no problems of this sort since, no smoke from the car when warm, cold or when driving and next to no oil usage, if any.

I've been working away without the car for a week so wanted to take it for a little(spirited) blast, obviously I let it warm up and everything as usual, and had been out driving about an hour or two, but then parked up and jumped out to have a cig but left the engine running...when I got back in I gave the throttle a couple of taps to about 2-3k revs and then let off and some blue smoke came from the exhaust(not a cloud of it like my old car with knackered valve seals used to on a morning) but enough to be noticeable, so I gave it a few more taps on the throttle and it did it again, left it to idle a bit and kept doing it till the smoke stopped, and now no matter how many times I rev it it's not smoking at all now, as before?

Obviously I'll keep an eye on it but any indications of the problem...valve seals, piston rings, turbo? Or could it have just been a random one off and be nothing?( probably hoping for too much)

Cheers

Edited by A L 3 X
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I've had this with every turbo car ive had, i just thought it was turbo related. Wouldnt bother about it mate.

As in just happening once? Or always doing it? Like I say this is the first time it's done it and seems to have stopped now?

When I was running a ct9, and the oil seals had gone on it, it used to smoke on idle when it was warm.

That's the thing though, it's only done it this once and then stopped? And seemed to be because of tapping the throttle, but now when tapping the throttle it don't do it, really strange lol, I hope it's nothing, but would prefer it to be turbo oil seals than the rings or valve seals or whatever

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  • 1 month later...

Only ever puffed now and again, after giving the car a proper kicking. If it smokes on idle then its signs of the turbo seals.

RIght then, UPDATE time:

Since fitting a decat I've noticed the smoke more often, now it mainly seems to be on warm idle, or giving it a rev, It has done it once when I let the car to warm up for ten mins, then when I got in and revved as I set off it smoked a bit, aside that it mainly seems to do it on warm idle, especially after giving it a bit of a boot, then if I pull up somewhere and leave it running.

Have had a comp test done and all cylinders were exactly the same, I would assume turbo but when fitting the decat there was no oil on it, a slight bit in the intercooler pipes though when I took it off to fit the fmic.

Ive also looked down the spark plug holes and no oil on the piston tops as somebody said there would be with a valve seal issue, car has done approx 65k.

Any ideas?

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mine doesnt smoke at all but i was parked up few weeks ago with it just idling for bout 30 mins. then i went to head home came out of junction and planted it and just seen a massive cloud of blue smoke behind me. personaly i think its my turbo oil seals and when it was idling it must of pooled up a bit on the fmic and when ive came on boost its pushed it out the fmic into the intake causing the smoke but thats just my theory lol.

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Ah I see daniel, yeah thats maybe an idea but as you say streetracer it really isnt that bad, its faint blue smoke not a cloud, and so i could swap the turbo with a mate and it not do it in that time even if it is something else lol,

I think as you all say though hopefully it is the turbo over any of the worse things, will keep an eye on it I think....my only worry is why was there no oil all over the turbo?

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After a spirited drive your oil is going to be at its thinest and may be leaking past oil seals. Not enough to notice on the dipstick betweek services but enought to burn a tad in the exhaust. (or thats as i understood it)

Nothing to worry about.

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This happened to me after fitting a decat. However mine was pretty bad. When i had my engine rebuilt there was nothing wrong with it so could only assume my turbo seals were gone.

John

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because its inside the turbo it either goes down the exhaust or the intake side as aposed to leaking out and covering the turbo casing

Ive had the turbo off mate, nothing on intake or exhaust wheels just a tiny bit in intercooler pipe which I hear is normal?

Driver, that may be a point, does that mean there's some wear somewhere or is it okay? Could maybe try some thicker or semi oil as I run 5w 40 fully synth

John, ah that's fair enough, if it turns out to be the turbo I won't be overly bothered, just as long as its not internal like rings or stem seals

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Turbo Grant and someone else were discussing this with The Toffinator I think and Grant said that these engines are too old to run full synthetic oil. If you find the topic it may be worth a read, so could try a semi synthetic oil and see how she goes?

John

Edited by Johnboy GT
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I've been monitoring the smoke, and it deffo seems to be more on idle than when driving, or more noticeable at least

Doesn't seem to do it in first startup during the day, started it up this afternoon after leavin it about an hour, let it warm up, and it only smoked after warmin it up and getting in and pressing the throttle? It's not a lot of smoke at all, and only does it for a few seconds

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Sounds like its the turbo to me .

only smokes on idle and only when warm!!! The turbo will most probably be makeing a seal when driveing because of the pressure but when on idel they arnt makeing a seall because of less pressure..Also when the turbo is Hot rubber expands there for letting oil though on tick over.

Go with the cheapest first .

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Yeah I know aky, I just worry invade when it does go bad it is something internal lol

And yeah that's what I'm hoping Micky, most signs

Point to it, the Only things that don't are no oil in the turbo, although there was a little In the cooler pipes, also the fact it does do it when I start it up and let it warm up, but even though I leave it ten mins

It's not exactly warm even though the water temps warm, or is it?

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