hello
revving the engine to about 4000 rpm, car is stationary, after releasing the pedal there are loud explosions from the exhaust.
the engine was rebuilt, carburettor rebuilt, timing is ok, never drove it yet.
any ideas?
didn't quite understand you, because unmetered fuel getting in is just what happens now. the diaphragm is new, but a puncture in it would give the same result- unmetered fuel getting in.Running so badly suggests unmetered fuel getting in. No puncture in the diaphragm?
The idle jet which is a press fit in its holder needs to be partially pushed into the holder, when screwed into its 'ole the jet will seat correctly. If not seated fuel will by-pass causing rich running. No amount of idle mixture adjustment will reduce this.
Good news. You must be both pleased and relieved.
still not sure that that's the cause for the problem...
I didn't fix it yet.If you don't think it's still running correctly, what are the symptoms?