Autosport Labs

Hi
The car is a gti (k-jet) so no carb. All hoses and gaskets replaced.
Idle screw is about 1.5 turns out and runs its cold start cycle well eventualy settling
to an even idle approx 800 rpm. Spent another weekend on it checking things but still no better.

There is a take off by the throttle butterfly but this is covered by the butterfly when closed so has no vacuum during idle conditions. My takeoff is on the engine side of the one way valve in the brake servo line. I have connected my workshop vacuum gauge directly to the fitting in the manifold for...

Hi Nitropixie,
Thanks for your reply. The vacuum is indeed taken from the inlet manifold at the same takeoff as the
brake servo and is receiving the full vacuum that is being created by the engine.
Ian

Hi, looking for help in trying to diagnose the cause for my engine having poor vaccum at idle. Car is a mk1 vw golf gti (1600), rebuilt engine 6k ago (rebore new pistons valves guides etc) It runs well fairly smooth idle and pulls strongly to the red line, but idle vaccum is around 15 in hg. When re...

Hi Martin, Thanks for the reply. Just to clarify what i was trying to say Is the pump fed from the tachymetric relay - I guess it is? And presumably it didn't use to click once per second?...or is the fuel pump cutting off because it's momentarily reaching its pressure? Yes the fuel pump is fed by t...

Hi, This morning I finished the installation of megajolt on mt 1981 VW Golf GTI. The car started and ran fine and i thought everything was going too well!! It was, the tach is not working and the fuel pump is pulsing on and off, I can hear the fuel pump relay clicking approx once a second. I can liv...