MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: Mego on October 11, 2015, 10:51:21 pm

Title: Puff Of Blue Smoke..
Post by: Mego on October 11, 2015, 10:51:21 pm

Hi Guys,

i have blue smoke coming from my exhaust when cruising downhill with no gas on pedal,when i reach a stop and then start to move again i can see a puff of blue smoke out of my exhaust,i changed my front pcv and problem still exist,i removed my valve cover and couldn't make sure its cracked,but i saw some oil in my rear pcv(breather tube).
the car is an 2007 gti mkv with stage 2 tune(software+downpipe+intake).
the car runs fine and oil consumption is very good(less than half a quart in 1k mile).
i never see these puffs of smoke before going stage 2 with downpipe fitted since i have been stage 1 + intake for over 2 years but after going stage 2 the problem got started.

Any help would be much appreciated and im ready to answer any questions u ask in order to solve this problem.

Thanks again

Title: Re: Puff Of Blue Smoke..
Post by: pudding on October 12, 2015, 04:43:21 pm

That sounds like valve guide wear but the TFSI isn't really known for that.

If not that, it could be an over filled sump along with very rich fuelling, thinning the oil out and is being burped into the intake?

Title: Re: Puff Of Blue Smoke..
Post by: Paradox1 on October 12, 2015, 05:07:29 pm

Do you run a catch tank?

Title: Re: Puff Of Blue Smoke..
Post by: Mego on October 18, 2015, 08:56:31 pm

No i don't.