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Name:	PicklePatch -	Reply
Subject:	Old Johnson Outboard
Date:	8/8/2008 1:29:37 PM

I have an old Johnson 6 horsepower that I use on my John Boat. Until recently it ran so smooth a person could not even hear it idle but while I was returning from a lenghty trip up Choccolocco Creek the motor developed a (for lack of a better description) severe miss. I thought it was just a spark plug (it has 2 ) but after replacing both the engine still runs VERY rough. I also replaced the fuel.

Any thoughts??

Ken

Name:	mckaygmc -	Reply
Subject:	Old Johnson Outboard
Date:	8/8/2008 8:26:23 PM

Do you know if you are getting spark to both plugs? If not you may have a bad ignitor/coil. Advance sells an Ignition tester you put between the plug and plug wire. Some people check the spark by laying a spark plug on the engine grounding it out. This allows you to see the spark. However this can be dangerous if there are any gas fumes around.

Name:	froghog -	Reply
Subject:	Old Johnson Outboard
Date:	8/9/2008 5:16:44 PM

This old J has a fuel filter and a carb.? I would check them both before I even checked for spark. You might have picked up a little dirt in one of your jet valves.

Name:	PicklePatch -	Reply
Subject:	Old Johnson Outboard
Date:	8/24/2008 8:27:34 PM

McK

You were right it was the ignition coil It ran fine at low speeds but spit and sputtered under power.
Thanks to both of you for the help

Ken

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