sick running engine

[paul30 AKA Badger]

OK peeps i have a sick running engine, starts up and runs fine until it gets to about 3500 refs then it pops and bangs its way to about 4000 and that it.
iv renewed the ht leads,plugs,rotary arm and dizzy cap(no points electronic ) would be very grateful if any one could help

[Stephen]

Have you checked the timing?

[oldgit]

Sounds like needs NEW RUBBER BAND ;D ;D ;D ;D ;D



If timing and elecs ok check manifold gasket as could be air leak

[monkeyjim]

connections
carb dash pot oil
crap in bottom of carb fuel bowl

[paul30 AKA Badger]

OK now running sweet
iv replaced the rubber band with knicker elastic ;D