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Model specific boards => Golf mk4 => Topic started by: Wazzzer on 31 May 2009, 12:25

Title: low vac on tickover?
Post by: Wazzzer on 31 May 2009, 12:25

as per this topic http://www.golfgtiforum.co.uk/index.php?topic=118132.0, MaxxeH has noticed my vac is a bit low on tickover...

What is everyone's reading on their 1.8T at idle?

Title: Re: low vac on tickover?
Post by: Wazzzer on 31 May 2009, 14:28

well I've just taken it out and it seems to be running -19 on tickover so it doesn't look like it's a problem  :laugh:

Title: Re: low vac on tickover?
Post by: T_J_G on 31 May 2009, 17:28

mine runs between -18 and -20 depending.

Title: Re: low vac on tickover?
Post by: Voodoo-Music on 31 May 2009, 17:36

Its supposed to sit at -20 on vacuum and -11 1st gear crawl

Title: Re: low vac on tickover?
Post by: richw911 on 31 May 2009, 19:57

-19 = correct  :wink:

Title: Re: low vac on tickover?
Post by: hainesz on 31 May 2009, 21:28

check for vacum leaks where the gauge has been fitted...

Title: Re: low vac on tickover?
Post by: Sean_GT on 01 June 2009, 00:40

mine is -30 lol goes all way 2 the bottom when its idle, was that bad?

Title: Re: low vac on tickover?
Post by: Voodoo-Music on 01 June 2009, 01:42

think its a vac leak on yours mate. Should not be below -20

Title: Re: low vac on tickover?
Post by: northeast_gti-t on 07 June 2009, 00:42

Quote from: richw911 on 31 May 2009, 19:57

-19 = correct  :wink:

thats where mine sits now i have 'zeroed' the needle  :wink:

Title: Re: low vac on tickover?
Post by: Grand Master Patch on 07 June 2009, 13:52

You must have a vac leak,what does it boost at?

Title: Re: low vac on tickover?
Post by: Mr_Orange on 07 June 2009, 20:19

If it was a vac leak would the pressure not go back towards normal (zero) as opposed to a higher vac reading (increased negative value)? 
There's a current thread on zero-ing for boost gauges, don't know if that's any help here?

Title: Re: low vac on tickover?
Post by: Wazzzer on 07 June 2009, 20:49

agreed a vac leak would make the reading higher (closer to zero)

I think your gauge is reading wrong myself