backfire at 3000-4000+ rpm, no power

Hi. Im having problems with my 1.3 driver. Its just had a weber 34ich fitted proffesionaly and idles perfect. Its fine when im in lower revs but as soon as i open it up a bit it backfires and just splutters, come back down to around 3000 and its fine. Any idea what this could be? Ive just had a new condenser fitted on the distributer. I was having problems with the distrib before cos the condensor housing was broken n it was backfiring and going nowhere but now it only does this between 3000-4000rpm. somtimes it does let me ease it up past but still stutters n backfires past 4000

could be the dizzy is it running points

I think it is the distributer but i have no idea what is wrong with it. Whats are running points?

Both 1.3 Drivers I have had in the past have had points. Simple and cheap to replace, if a little fiddly. You really need a dwell meter to set them up properly.

If you haven't already I would also replace the rotor arm, cap, plugs and leads, then set the timing.

those were the days of running points lol my old mk1 escort used to chew them up