MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: Hannakournikova on January 16, 2016, 03:35:27 pm

Title: Mystery vacuum line
Post by: Hannakournikova on January 16, 2016, 03:35:27 pm
So noticed a vacuum line cable tied up. Followed it to to under the engine cover. Will have a further nosey with the rain stops. 
Any ideas?
Title: Re: Mystery vacuum line
Post by: Hannakournikova on January 16, 2016, 03:44:30 pm
And photos
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fc291%2Fhannakournikova%2F2016-01-16_15.36.37_zpsufjvmzjt.jpg&hash=a7a3fe2b57958bc221abf67de0f1983ad3ef2e94)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fc291%2Fhannakournikova%2F20160116_134955_zpsg3efdzmf.jpg&hash=ccf04b406e5d846deb4a15e7fce0f899854fa946)
Title: Re: Mystery vacuum line
Post by: Chris92 on January 16, 2016, 04:34:23 pm
Looking at where it's coming from I'd say it's a vac pipe for a boost gauge
Title: Re: Mystery vacuum line
Post by: Hannakournikova on January 16, 2016, 05:10:56 pm
went outside and braved the cold to investigate. Seems to go down towards the turbo.
Title: Re: Mystery vacuum line
Post by: Chris92 on January 16, 2016, 05:45:30 pm
Probs running through the bulk head down there
Title: Re: Mystery vacuum line
Post by: Hannakournikova on January 16, 2016, 08:07:06 pm
Though the grommet would be higher up. Needed to check canbus tomorrow so will have a nosey.
Title: Re: Mystery vacuum line
Post by: GTI-Pirelli on January 16, 2016, 09:09:30 pm
Do you know if you definitely have an OEM diverter valve on the turbo?
Forge units operate using a vacuum that would follow that route between the valve and the intake manifold. Or as others have said for a boost gauge.

Obviously not my image. The pipe running from the vacuum tap (lower right of the manifold) and cable tied to the metal pipe (fuel rail?).

(https://www.gmpperformance.com/CFJFiles/GMP/Vehicle-Images/3448-7698.jpg)
Title: Re: Mystery vacuum line
Post by: r5gtt on January 16, 2016, 09:15:07 pm
^^^^

I was also thinking that but didn't know how this was possible until now hahaha
Title: Re: Mystery vacuum line
Post by: Hannakournikova on January 16, 2016, 09:27:56 pm
where is DV located?
that the one best accessed by removing drivers wheel?
Title: Re: Mystery vacuum line
Post by: r5gtt on January 16, 2016, 09:34:39 pm
Yes it's meant to be on out k03 turbos. ko4 have them in you're face like a 5 minute job to replace lol

Yours may have a lovely relocation kit fitted but you'll need to take the engine cover off and take a picture for someone to say yay or nay.