GolfGTIforum.co.uk

Model specific boards => Golf mk4 => Topic started by: churchy 775 on 02 June 2014, 18:24

Title: no boost
Post by: churchy 775 on 02 June 2014, 18:24

golf 18t is not boosting ,when got it there was the o2 sensor so put one on made no different, put dump valve on and still the joy can someone help please

Title: Re: no boost
Post by: MoMartin on 02 June 2014, 18:51

Have a look for any vacuum hose that might have a kink in it, my car had boost problems, and it just turned out to be the vacuum hose coming off the n75 valve, causing it to stop the wastegate from working.

Title: Re: no boost
Post by: churchy 775 on 02 June 2014, 18:58

checked pipes , it did boost once for a couple of day and now nothing again, fitted boost gauge and it reads about 3psi

Title: Re: no boost
Post by: MoMartin on 02 June 2014, 19:44

Clogged pipe / knackered turbo then maybe?

Title: Re: no boost
Post by: Bandit127 on 02 June 2014, 20:03

Scan it for codes. This should at least tell you where to start looking.

Standard (unmapped) boost is only about 5 psi or thereabouts, so you are not far off.

Title: Re: no boost
Post by: Dalo Harkin on 03 June 2014, 14:00

Itll be a block or cracked pipe somewhere, check under the inlet manifold maze of pipes under there

Title: Re: no boost
Post by: davidgtrr34 on 03 June 2014, 21:30

Are you getting no boost at all or are you getting very low boost. Check the bolts holding the turbo on the manifold