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Model specific boards => Golf mk1 => Topic started by: tajbhambra on 27 March 2008, 10:37

Title: How to adjust/lower idling speed on 1.8 Gti 1983 Y
Post by: tajbhambra on 27 March 2008, 10:37

Hi all, my MK1 idles around 1100rpm once hot and I'd like to get it down to around 800rpm if possible. Where exactly is the screw to do this?

Cheers guys

Title: Re: How to adjust/lower idling speed on 1.8 Gti 1983 Y
Post by: leeroy20vt on 27 March 2008, 12:10

not sure but is it a allen key on the top of the air box or is this the air/fuel mixture ?

Title: Re: How to adjust/lower idling speed on 1.8 Gti 1983 Y
Post by: R11ysf on 27 March 2008, 13:38

The screw is a 7mm hex headed bolt on the back of the inlet manifold.
Hope this helps.

Title: Re: How to adjust/lower idling speed on 1.8 Gti 1983 Y
Post by: tajbhambra on 27 March 2008, 14:51

Thanks, is it safe to turn this till you get the desired effect, or will it effect emmisions etc..? I thought there was a CO screw to deal with as well?

Thanks again

Title: Re: How to adjust/lower idling speed on 1.8 Gti 1983 Y
Post by: grungeisdead on 27 March 2008, 15:39

i normally keep my mk1s idling at 1k, you need to adjust your idle screw at the back of the throttle body on the right hand side of the inlet manifold.

there is the co screw on the metering head but unless you have a gas analyser i wouldnt bother messing with it, take it to a garage and ask them to set it up  shouldnt cost more than 20 squids