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m2salmon

1054 Spark Issue

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m2salmon

During the hurricane I spent some time re-assembling my 1054. I refreshed/cleaned up some areas on my K241 since I got it. I set the valve tappet clearances, cleaned the valves and seats, cleaned the top of the block, replaced all gaskets on the outside of the block, lapped the head, new head gasket, new points, set points timing, new plug with proper gap, cleaned carb after replacing float, main jet, installed rebuild kit, and bushed the throttle shaft. Thought it was going to start up and purrrr. But I was not so lucky!

When I turned the key, the ignition light comes on, when I hit the starter plunger button, it turns the starter, and the flywheel turns. Gas is getting to the plug, the compression feels good (but I didn't check with a gage). I've gotten it traced to a spark issue. Here's where it gets interesting- when I turn the engine with the starter by pushing the starter button, there is no spark at the plug, until I let the button go. When I release the starter button, the plug will spark one time. When the starter circuit is closed, the plug will not fire, but once the circuit breaks, the plug fires one time. When I turn the flywheel slowly by hand, the plug fires when it should at the top of the compression stroke, every time. After a day of mulling it over in my head, I removed the belt from the starter motor to the flywheel, wrapped a rope around the pulley groove in the flywheel, and gave it a big pull. The engine started and ran for a few minutes until I turned it off with the button on the points cover. Hearing that old engine run on it's own after not running for who knows how many years was sweet music to my ears.

There has to be some kind of issue in the starter button/starter circuit that is affecting the coil/plug side of the ignition. Do you guys have any recommendations on where to look? What exactly am I looking for, some type of grounding issue? I though maybe one of you guys may have run into a similar problem.

Any ideas would be appreciated.

Thanks,

Marty

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JUSS10

i can't say I've had the same issue but i would agree with your thinking sounds like a grounding issue or a circuit shorting somewhere. I would start by tracing the ignition system wiring and make sure thats all good, check connections and look for loose wires that may be grounded or out of place. There should be a wiring diagram floating around somewhere. That starting system is pretty simple, hot wire from the battery to the start switch then from there to the starter generator. maybe check the wiring on the regulator, i feel like that could cause some issues if hooked up wrong as well.

Justin

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m2salmon

Justin,

Thanks for the help. I just went out to the garage and got it running off the starter motor.

When you said the positive lead from the switch/battery goes to the starter I knew what I had done wrong. When I put the motor and starter back on the frame I connected the positive lead from the switch/battery to one post on the starter and the neg lead from the battery to the other post on the starter, which is also wired into the regulator. I took the neg lead off the starter post and put it to a ground on the engine block and it fixed it. Thanks again for the help. I'll figure out how to post a video somewhere once I get it tuned up.

Marty

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JUSS10

glad i was able to help. the 1054 is an awesome machine, probably my favorite, always good to hear another is up and running!

Justin

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