JohnC wrote:David Gentleman wrote:
Well if he has no spark at all plugs, then its at the source, so either cap, rotor, king lead, coil, or supply to coil etc...
King lead is the easiest to check, then cap and rotor, then coil and power.
Sorry David, surely that is the wrong way round. There is no point in checking the secondary cct, until you are sure there is power (12v) supplying the primary cct. I agree with a good look around first, in case there is anything obvious, but I assume the AA man did that, but dont disturb anything until you know what part of the cct is at fault. You say in your quote "then its at the source" I would take the source as being the battery. After all the spark is generated from 12v, but you could be right with the actual fault, but I always like to know exactally what the fault was, and not run the risk of clearing it by poking around without putting a marker down as to where the fault lies first.
John
Well, yes if you happen to break down at the side of the road and happen to always carry a multimeter around in your pocket ...or own one, or know how to use one, or even know where they should be looking for the power supply...but anyone can flip two retaining clips and see if an end of the rotor arm is dead or the inside pin of the cap is ruined...