[CP241]

Don’t bother with an inline spark tester. They only tell you *if* there is spark. That doesn’t mean it’s a good spark. You’re better off holding the plug against the valve cover bolt and looking at the color. If it’s fat and blue you should be okay. If it’s white or yellow then it’s probably too weak under compression to run.

I also like to take a timing light to it after that and run the motor. There’s no timing marks to reference so not looking at that, just make sure it’s flashing consistently. I’ve had bad ignitors that will spark for 30 seconds to a minute, then get erratic, then quit. But if you waited the time it took to pull the plug and check for spark, it was fine again.

Timing is not adjustable. If it ran before then your timing is fine. The only way the timing gets off is if you take the motor apart and don’t align the crankshaft to the camshaft correctly.