Hi i have had my zed for a week now and when i bought it i had a fair bit of smoke on idle however i was given PCV's with the car which i changed and gave me a reduction in smoke on idle, i changed these roughly 250 miles ago but i still have some smoke on idle (from O/S exhaust) BUT when i leave the air con on auto there is no smoke? there is also no smoke on slow driving nor on fast driving????? also the idle is a bit all over the place some times its at 1100 then 1500 them some times 2000 and with air con off it varies from 900 to 1200 rpm its really confusing me???? any help be good??

 

only smokes when idle is at 900 rpm! and only from the drivers side exhaust.

forgot to say its a 1992 manual tt

it can take upto 500 miles to clear the reidue/oil out of the pcv pipes completly

Did you just chang pcv`s? Or did you replace the 5 hoses too?

umm just the valves as the hoses seemed fine they where still nice a soft been going through history and they have been changed a fair few times