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drolston · 04-22-2021, 02:20 PM

My previous post went up before I saw the black #4. Were all the rest okay?

First check that you are getting a strong blue spark at that plug to jump about 1/2". If not run down the ignition problem. Bad spark plug wire; distributor cap crack or carbon trail.

If spark is good at #4 do the MMO and compression test things.

04-22-2021, 02:20 PM	#33
drolston Senior Member Join Date: Jun 2014 Location: Williamsburg, VA Posts: 1,627	Re: Flathead Running rich My previous post went up before I saw the black #4. Were all the rest okay? First check that you are getting a strong blue spark at that plug to jump about 1/2". If not run down the ignition problem. Bad spark plug wire; distributor cap crack or carbon trail. If spark is good at #4 do the MMO and compression test things.