Hi I have a problem. I own a 1974 bay pickup with a 1641 engine with twin webber carbs when going along applying the Excelerator it's flat it runs flat then after a short Period it picks up. I recently fitted a new fuel pump and has not helped with my problem. Has anyone got any idea many thanks...
Heres the story,
I have just rebuilt my 1300 beetle engine.
Put all the parts back on and heres how it is.
It runs and idles perfect and revs fine. Whilst accelerating there is no power down low but as the revs get up it really flys.
Seems there is a serious flat spot as the revs...