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I have a 1985 Formula. 305 cci - 200HP. Just changed plugs /

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I have a 1985...

I have a 1985 Formula. 305 cci - 200HP. Just changed plugs / distributor cap / wires. was running good. Boat left me stranded on the water today. started missing then finally stalled. Noticed sparking under the boot on the ignition coil.It was sparking from under the boot to the negative terminal on the coil. was able to get it going by removing the boot and wrapping electrical tape around the tip that the boot covers. I reattached the boot to the coil then wrapped the bottom of the boot with electrical tape too. I finally wrapped electrical tape around the neg. terminal to insulate everything. That got me going again. Do I have a bad coil wire or do I have a bad coil

Submitted: 2 months ago.Category: Boat
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Answered in 16 hours by:
5/28/2018
Marine Mechanic: Joe, Marine Mechanic replied 2 months ago
Joe
Joe, Marine Mechanic
Category: Boat
Satisfied Customers: 7,579
Experience: ASE, electronics, Marine mechanical and electronics, pwc, wiring, all around repair tech,
Verified

Hello,

Thank you for allowing me to assist you, my name is Joe and I will be happy to help you with your concern today.

Since the wire/boot is right at the coil the easiest way to tell is to swap out the coil wire, and use a spray bottle with water to mist while running, in the dark spraying it you will be able to see the electricity sparking from whatever is bad, this way you can isolate it to the coil or wire, chances are that it is a bad wire or micro crack in the coil which is very very common.

My goal is to give you the best experience possible! I hope I have earned a 5-star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. If you need more assistance, please use the reply box and let me know. Thanks for using justanswer / pearl.com and have a great day!

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