30-03-2022, 09:34 PM
(30-03-2022, 07:07 PM)Graham Barker Wrote: It 's mind boggling to hear how many things I should look at.
If we listed all the possibilities it would take more than a lifetime to work your way through them all. And as you replaced parts you might fit some faulty parts, adding to the problem.
Never mind all the possibilities, you need to start to diagnose.
First, do you get a good strong spark from the coil? If not use a simple test light to check the circuit through the ignition switch, coil and the points to earth.
If/when there is a good spark from the coil, check for a spark at a plug.
Test the rotor arm for a short through it.
If/when sparks to the plugs seem good, try to start the engine with and without choke and throttle.
If it doesn't start, then squirt a spoonful or two of petrol straight into the air intake. If that makes it start momentarily then start to check for petrol from the pump.
If it still hasn't fired at all, then remove the spark plugs and are they sooted up?
Try not to dismantle things unless you need to. Try to be logical and think it through. Try not to swap parts.
I did this for a living for over twenty years, can you tell?