Damn this thing, it's getting strange, OK, everything checks out OK, coils, igniter etc. We still have no spark BUT if you are winding it over there is no spark but just has you let the starter button go if the engine is still winding a bit and is in the right place it sparks, a nice big fat blue one. Also the battery voltage, brand new battery, is reading 12.7 volts. When winding the voltage being supplied to the igniter drops to 9.5V while winding over, I've checked the main fat earth cable attached to the engine, that's all good but the other thinner earth cable disappears into the loom somewhere, as far as I can tell there is no other earth connection on the frame etc. Any ideas? It's doing my head in.
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