Smoking at High Revs

1. Scottish_Gaz Saxperience Forum Bum Joined: Aug 2007 Glasgow Posts: 2614 Saxo VTS!!!!!!!

   #1 10th March 2008, 16:22

   When i get to high revs, my car is starting to give cough out burste of smoke
   
   only when in higher revs from about 6 k revs
   doesnt constatly smoke but will smoke then stop for duration of time then smoke for 2 second then stop and so on and on
   
   i thought it was white but been told its black
   
   checked oil and that and seems fine
   
   what can this be?
2. Coonper Saxperience Post Whore Joined: Aug 2007 Coventry Posts: 5182 Lupo GTI

   #2 10th March 2008, 16:26

   Just dont rev it up to 6k! Thats high enough anyway. Surely the limiter kicks in shortly after that.
3. Scottish_Gaz Saxperience Forum Bum Joined: Aug 2007 Glasgow Posts: 2614 Saxo VTS!!!!!!!

   #3 10th March 2008, 16:29

   well not as high as 6k then, maybe 5k but its defo something wrong
4. Scottish_Gaz Saxperience Forum Bum Joined: Aug 2007 Glasgow Posts: 2614 Saxo VTS!!!!!!!

   #4 10th March 2008, 16:30

   and not when i rev, its when i drive but smokes when rev is at about 5k doing approx 90 mph
5. DaxVTR Frequent Poster Joined: Jan 2008 lichfield Posts: 531 Saxo VTS

   #5 10th March 2008, 17:02

   sounds like steam line.. mite be ur pistonrigs on the way out if its sorta purple/blue smoke
6. Scottish_Gaz Saxperience Forum Bum Joined: Aug 2007 Glasgow Posts: 2614 Saxo VTS!!!!!!!

   #6 10th March 2008, 17:13

   is there any way of telling plus i dont think its purple/blue colour
7. RCD-Performance Established Member Joined: Dec 2007 Southampton Posts: 2278

   #7 10th March 2008, 22:00

   compression/leakdown test for POM.
8. Scottish_Gaz Saxperience Forum Bum Joined: Aug 2007 Glasgow Posts: 2614 Saxo VTS!!!!!!!

   #8 11th March 2008, 06:31

   pom? are you telling me to get a compression/leakdown test or you saying that it can be compression or what?
9. RCD-Performance Established Member Joined: Dec 2007 Southampton Posts: 2278

   #9 11th March 2008, 09:08

   Peace Of Mind
   
   Well if your piston rings are shot, this is know to cause smoke when on full throttle, although it could be lots of things, but it would be what i would check first.
10. VTS123 Regular Poster Joined: Mar 2007 Poole, Dorset Posts: 447 Mk1 VTS

    #10 11th March 2008, 10:31

    Quote:

    Originally Posted by Coonper Just dont rev it up to 6k! Thats high enough anyway. Surely the limiter kicks in shortly after that.

    As long as it's fully warmed up it's fine to rev all the way to the limiter.
    
    As for the smoke, if it's black it's probably overfuelling and the smoke will contain fuel which isn't fully burnt. Unless you have started to see a huge increase in fuel consumption I wouldn't worry about it too much.
    
    Typical causes of overfuelling are a faulty lambda sensor or coolant temperature sensor.