Hi all,
My Ford 347 with Weber IDFs has been playing up of late and two starter motors have failed within a month. Both occasions, it happened after priming the engine too much (maybe pumping the accelerator pedal too much before ignition; 4 times!), with what appeared to be a backfire through the Weber trumpets. On investigation, on both occasions one of the small starter motor inner gears had sheared in half suggesting possible back rotation of the flywheel (and thus cylinder) during start; too advance timing perhaps?
I spoke with Frank Catt a few days ago and he has given me some sage advise for things to check, many thanks for that Frank.
Wrt ignition timing on idle, I have seen BTDC numbers varying from 6° to 15°, and obviously this will make a difference. On 3000rpm, there seems to be reasonable consistency in that it should be around 32-34° BTDC.
Can anyone advise what the BTDC should be on 1000 rpm idle?
Many thanks
Ian
My Ford 347 with Weber IDFs has been playing up of late and two starter motors have failed within a month. Both occasions, it happened after priming the engine too much (maybe pumping the accelerator pedal too much before ignition; 4 times!), with what appeared to be a backfire through the Weber trumpets. On investigation, on both occasions one of the small starter motor inner gears had sheared in half suggesting possible back rotation of the flywheel (and thus cylinder) during start; too advance timing perhaps?
I spoke with Frank Catt a few days ago and he has given me some sage advise for things to check, many thanks for that Frank.
Wrt ignition timing on idle, I have seen BTDC numbers varying from 6° to 15°, and obviously this will make a difference. On 3000rpm, there seems to be reasonable consistency in that it should be around 32-34° BTDC.
Can anyone advise what the BTDC should be on 1000 rpm idle?
Many thanks
Ian