I have a 1991 TT Auto. I was sitting at a junction with windows open recently when I got a whiff of what smelled like a plume of burning oill. I instantly looked up to see acouple of car behind me and thought it may have been one of them. Pulled over, checked the emissions visually on my car, clean as a whistle and smooth tickover on my car.

 

I have not detected any smoking since apart from yesterday, siting at some lights and I looked in the rear view and noticed smoke. Pulled over, again no sign at all?? Again there were cars behind me...could it have been one of them...I doubt it judging by there recent manufacturer.

 

I have sat the car on tickover, revved it, etc etc....nothing but clean emissions.

 

I though that maybe one of the turbo seals had gone or was going and was leaking oil, but an expert told me that there it would be more of a constant smoke.

 

As far as I can see, ther car seems to be perfect.......am I imagining this or do Z`s smoke now and then for no reason.

 

Something I need to add, the air con was on and the tickover rasied on both occasions, could that have an influence ??

 

 

ZIND

It could be the first sign of turbo rear seal failure.....

 

......or something simple like PCV valves needing replacement. Also, how often do you use the car? Sometimes lack of use will cause a little smoke from time to time - give the car a good run and see if it smokes on idle afterwards.

 

As for the idle speed - yes; it's normal for the revs to increase when the a/c is switched on;)

 

Richard:)

Hi, thanks for your reply....I use the car nearly every day for running around town.

 

Can the turbo rear seals go over a period of time? Is it a big job?

 

:)

Hi, thanks for your reply....I use the car nearly every day for running around town.

 

Can the turbo rear seals go over a period of time? Is it a big job?

 

:)

 

As everything they will eventually wear down. The seals themselves are probably pennies.....

 

.......but it could cost you anything up to £1000 to get the engine out and remove the turbos!!

 

Personally, if the car is running fine, boosting well and not consuming oil like a student on the beer during happy hour; then I'd leave it. The odd puff of blue smoke will do no harm and is not enough to effect emissions at MOT time!

 

Given the ages and mileages of most 300zxs on the road, many will have (or will soon have) the turbo seal issue!

 

Richard:cool:

As everything they will eventually wear down. The seals themselves are probably pennies.....

 

.......but it could cost you anything up to £1000 to get the engine out and remove the turbos!!

 

Personally, if the car is running fine, boosting well and not consuming oil like a student on the beer during happy hour; then I'd leave it. The odd puff of blue smoke will do no harm and is not enough to effect emissions at MOT time!

 

Given the ages and mileages of most 300zxs on the road, many will have (or will soon have) the turbo seal issue!Richard:cool:

 

 

 

I bet thats when people will start scraping them due to the cost of the job :(