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Model specific boards => Golf mk4 => Topic started by: duckman on 18 October 2012, 20:21

Title: Common places for boost leeks?
Post by: duckman on 18 October 2012, 20:21

Hi guys, I'm sure my gti has a boost leek, dv valve has been changed and most vacuum pipes replaced, and no visible signs or split pipes, is there anything common faults?

Title: Re: Common places for boost leeks?
Post by: Dalo Harkin on 19 October 2012, 07:20

what makes you think you have a leak?
do you have a boost gauge, if so whats it reading.

common places are both sides of the pancake pipe (behind drivers wheel)
under the inlet manifold where the PCV system is
look for oil on pipes, boost leaks, leak oil

Title: Re: Common places for boost leeks?
Post by: duckman on 19 October 2012, 23:39

Seems really sluggish, plus I've noticed a high pitched whistle when accelerating aswell as the normal induction turbo noise, doesn't pull as it did but ill check the pan cake pipe thanks bud and get the odd cough when driving at motor way speeds

Title: Re: Common places for boost leeks?
Post by: golfyste on 20 October 2012, 04:07

Line coming off DV
Check all connections are tight
Y piece behind inlet manifold
PVC system
Boost lines coming off charge pipe
Intercooler pipes

Pretty much everything under the bonnet  :laugh:

Title: Re: Common places for boost leeks?
Post by: Jez 16v on 20 October 2012, 06:55

If its a diesel,I've had the intercooler pipe behind the drivers headlight pop off before.