Hello all,
so I’m after some desperate advice with some bike carbs on my 2.0 pinto, I’m running a vacuum dizzy with 1 vacuum outlet per manifold tube on the carbs and then the brake servo also on the 4th tube, these are all connected via t pieces and 6mm tube.
the problem I’ve got is it only seems to run on 2 cylinders, I know this is a carb / vacuum issue as I’ve swapped back to the original 32/36 carb and it runs a treat.
Any ideas what could be causing this? It’s only on cyl 3&4, if you rev the car above 3k then it seems to run normal / better, it’s only on low revs / idle.
also if I disconnect the vacuum pipe from 3&4 on the manifold then it runs much better.
Could it be because I haven’t got a proper vacuum chamber and I’m only using 6mm pipe?
Could the carbs be faulty?
Could I have an air / vacuum leak?
any help is much appreciated!