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Model specific boards => Golf mk1 => Topic started by: Concorde Rules on 25 August 2011, 22:09

Title: Poor carb performance
Post by: Concorde Rules on 25 August 2011, 22:09

Hi guys,

Need your thoughts.

Having a few issues with my GL.

It's a 1983 Mk1 JB engine 1457cc with a Weber carb as a replacement for the 1B3 (36tlp I think).

Problems include
1. Hesitations - Say we are under full throttle, then if I suddenly reduce throttle to 50% it jolts and judders before continuing on fine.
2. Planting my foot from idle in any gear results in kangerooing, i.e. power, no power, power, no power but not quite as little as before etc..

All I can say is it's a sine wave of acceleration until about 2000rpm in first where it seems to settle down but this judder/kangerooing happens at any RPM in any gear - just less noticeable at higher RPMs.

Anybody got any ideas what it is?

Really getting to me as it was running perfectly for years!

Also any carb specialists I can take the car to in the south of the UK?

Title: Re: Poor carb performance
Post by: weazgti on 26 August 2011, 18:57

Has the filler neck been changed?
Has it got an inline fuel filter? If it hasnt get one on there and see if it fills up with rust.

Title: Re: Poor carb performance
Post by: Concorde Rules on 05 September 2011, 12:57

Quote from: weazgti on 26 August 2011, 18:57

Has the filler neck been changed?
Has it got an inline fuel filter? If it hasnt get one on there and see if it fills up with rust.

Both are clean.

Had a look in the tank as the filler neck hasn't been changed yet, but i've got the part ready.

I *think* it is an air leak, i'm going to try and find it.