78' johnson outboard...no spark

[MIKE IN lINO III]

I recently bought a 15hp johnson, took it home to find out that only one of the spark plugs has spark. I switched the plugs to verify that the plug itself was good, it was. The wire is not producing spark. It has two wires, one does not fire. I am not all that mechanically inclined so does anyone have an idea of where I need to start to fix this motor?

[Guest]

One of your coils is bad.

That motor the coils are external I beleive(where your plug wire comes from)... very easy to change.

You can even switch your coils to verify one is bad.. only takes a few minutes.. if you switch them, the other plug should fire... if that is the outcome.. you know thats your problem without a doubt.

On a rare occasion.. the coils can get corrosion where they mount to the powerhead.. if they lose contact, they lose ground and you will not get spark... its a long shot, but possible.

Your coil(one of them) is most likely bad.

[MIKE IN lINO III]

That Guy,

Can you PM me at [email protected], I have some questions for you.

Thanks.

Mike

[MIKE IN lINO III]

Turns out the motor is a sea king, my mistake. I was able to get the nut off but there aren't any threaded holes in the flywheel so I can pull that off too. Am I missing something? All it has is three indentations where the manual starter sits. Any help would be apprieciated.

Mike

[Surface Tension]

You'll need a puller to get the flywheel off.

In a pinch your can put the nut back one just far enough to cover the threads. Pry the flywheel up as you hit the nut with a wood mallet. Don't pry with a lot of force and be careful of what your prying against.

Bad coil or points would be my guess as far as the no spark.

[Guest]

email sent

[MIKE IN lINO III]

I was able to get the flywheel off. Anyone know where I can get Sea King parts in the metro?

Mike

[Surface Tension]

Try Twin City Outboard

[jwhjr]

Quote:

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Try Twin City Outboard

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I second that. I've had good luck with them in the past, and I am currently waiting for an answer on a couple of early 60's Sea King motors from them. Good Luck.

[TimR]

Is it a Sea King made by Gale Manuf.? If it was, it is the same thing as a J/E. Many of those sea Kings were J/E knockoffs, and a bunch of the parts interchange. You should be able to get coils for it at your local NAPA.

I have an old 5 horse Sea King that is the same as the 5.5 J/E of the year. I bought coils for it at NAPA in Forest Lake. You can get a cheap ($10) puller for the flywheel at NOrthern Tool.

Tim

[MIKE IN lINO III]

Thanks TimR,

I'll stop at the NAPA on the way home. I was able to get the Flywheel off with some penetrating oil and some perseverance.

Mike