In the cold weather it wouldn't start. Put a new fuel pump on it today, as the one on it was making irritable high-picthed whining noises and I was suspicious of it.
It now starts (after re-connecting the starter trigger wire to the solenoid) but it's still sounding lumpy at low revs and not firing up as easily as it should when hot. It seems to take too long for all cylinders to fire, some fire almost immediatetly and the rest chime in eventually. This is what it was doing the other day before fitting the new pump, except that it declined to start at all. Had all the plugs out then and some were wet with petrol while others looked sooty, as if they were the ones that were firing.
Ignition looks OK and sparks look OK, plugs are new and the leads on it came off the now-sold one where they never gave a hint of trouble. Dizzy cap looks new-ish, too.
I'm now wondering if it has one or more sticky/dirty/buggered injectors. This is a motor which has been standing unused for the best part of a year, which is why I suspected the fuel pump, having seen them fail in the past in such circumstances. Tomorrow, I'll try turning it over immediately I turn it on, rather than waiting for it to prime. It's booked to put it on the analyser tomorrow morning, which may shed some light.
Any point in bunging injector cleaner in it? or should I just replace them anyway, or try to clean/test them?