Quote:
Originally Posted by slonomo
If you hare having ignition issues, first start with all the basics. Spark plug, coil, wiring, connections. If you cannot find the issue, the CDI is usually the suspect.
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One step at a time. Start simple and don't overthink it or just start ordering parts hoping it will work.
Yes, the spark should be fat and blue. Might be worth comparing the spark when the engine is cold (and runs) to what it looks like when the engine is hot and it dies.
Something else I've done that's been helpful, is hook a timing light up to the spark plug wire and run the motor. Don't worry about timing marks or etc. just watch the light flashing its pattern. run the motor until it dies and you can see the light flash get erratic or disappear completely. Sometimes this can be helpful if you've got one that runs and dies, but then once you stop you can hit the pedal and go again for a while.