Hi Chaps,
Haven't posted for quite a while since been tied up re building an old German bi plane (man the Healey felt like a walk in the park in comparison !!)
Anyway having had the Healey (BN1)'professionally' serviced to clear misfire (timing check,new points,rotor arm, condenser) it is worse than ever.
Runs fine for about 20 mins. until gets warm/hot then progressively worse misfiring until finally stops. Applicaation of choke doesn't seem to effect misfire. After cools down for ~20 mins. starts and runs for another 10 mins. then repeat cyle until bored !!
Ignition coil seems to be very hot (too hot to hold), don't know if this is normal ?
Otherwise I would guess fuel vapourizatio, although not sure what has changed since it used to run fine. Pipe between carbs. runs below vent pipe to 100M air box should it run above to take further form hot block ?
Any ideas gratefully received
Ian
Haven't posted for quite a while since been tied up re building an old German bi plane (man the Healey felt like a walk in the park in comparison !!)
Anyway having had the Healey (BN1)'professionally' serviced to clear misfire (timing check,new points,rotor arm, condenser) it is worse than ever.
Runs fine for about 20 mins. until gets warm/hot then progressively worse misfiring until finally stops. Applicaation of choke doesn't seem to effect misfire. After cools down for ~20 mins. starts and runs for another 10 mins. then repeat cyle until bored !!
Ignition coil seems to be very hot (too hot to hold), don't know if this is normal ?
Otherwise I would guess fuel vapourizatio, although not sure what has changed since it used to run fine. Pipe between carbs. runs below vent pipe to 100M air box should it run above to take further form hot block ?
Any ideas gratefully received
Ian