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78 Mercury 402 won't start
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<blockquote data-quote="landlocked" data-source="post: 397130" data-attributes="member: 20062"><p>JMichael My humble apologies! You were right!!! I found I had the output of coil one and two flopped when I checked the motor with a timing gun. A million thanks!</p><p></p><p>If you're just landing here from the Internet, here's the recap: I welded a pontoon without disconnecting the wiring harness from the motor. The result was a fried switch module. In parallel, I had replaced the carb float as it was half full of gas/oil. I checked all ohm values and DC values to isolate the motor not starting. The switch module was replaced and all other values checked out. In the end the final hurdle was the connection from the coils to the spark plugs. I had them flipped, though I'm not sure how that happened.</p></blockquote><p></p>
[QUOTE="landlocked, post: 397130, member: 20062"] JMichael My humble apologies! You were right!!! I found I had the output of coil one and two flopped when I checked the motor with a timing gun. A million thanks! If you're just landing here from the Internet, here's the recap: I welded a pontoon without disconnecting the wiring harness from the motor. The result was a fried switch module. In parallel, I had replaced the carb float as it was half full of gas/oil. I checked all ohm values and DC values to isolate the motor not starting. The switch module was replaced and all other values checked out. In the end the final hurdle was the connection from the coils to the spark plugs. I had them flipped, though I'm not sure how that happened. [/QUOTE]
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78 Mercury 402 won't start
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