This is really weird....I started up the Z after days of it just sitting there waiting to go to the mecanics for suspected turbo seals problem(after having exhaust fitted it smoked real bad)and this time it didn't smoke AT ALL!! Couldn't believe it ..Took it out on the highway with mate following ;drove it hard ,fast take off...nothing to be seen ,just a bit of soot on extreme acceleration...let it sit idling for 10 mins,nothing;no smoke at all!! Then later sitting in the drive way it starts smoking again (a lot)So what do you reckon??Turbos are working perfectly(as in very quick)and this smoke business just seems to be random.....could this be indicative of the PCV valves?? as first suggested? All advise greatly appreciated as next week its due to go in and be worked on ..Cheers

Same symptons as i had even after changing my PCV,s , under boost you don,t get any smoke because the oil seals are also under pressure making them seal properly .

On tickover and after de-catting theres no back pressure in the tubs to

' help' make the already worn oil seals work properly , hence smoke :rant:

What threw me was i kept checking my intake pipes( Smithy,s Stainless ones ) thinking they would be coated with oil on the inside given that the tubs were blowing oil into the engine , hence smoke .But they were always clean.

The thing is it didn,t smoke all the time either :confused:

It wasn,t until i pulled the engine to do the tubs i found out why, on mine it was the the seals on the exhaust side of the turbos that were leaking straight into a red hot down pipe , hence smoke and not by being burnt going through the engine :headvswal

HTH

PCV valves are about £3.50 each from MJP now so get them changed.

It's so hard to tell and I've had lots of experts look at mine with no definate answer - worth a go!

:( yes,nice one Guys;I'm going to immediately do the PCVs and then see.....Must say I thought I was out of trouble for an hour or so