Suddenly, no spark! - Honda Shadow Forums : Shadow Motorcycle Forum

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Old 12-11-2012, 02:15 AM   #1 (permalink)
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Talking Suddenly, no spark!

I've had my '84 vt700c for a month now. Never had a problem except for one cold morning where it took about 10 tries to get it started with full choke. 5 minutes of warming up and it rode nice and smooth; clean shifts, healthy idle and acceleration, everything was gravy. Last week a storm came round, lasted 3 days, knocked trees over blah blah blah. Don't have any room in the garage but I kept the bike close to the house and covered. Few days later it was dry enough for a ride so I went out and tried to start - nothing. Figured it was just another cold start issue so I fiddled the choke and kept going. Engine was turning, fuel pump was pumping, just wouldn't start and I, being unfamiliar with the capacity of a smaller battery and impatient to ride, foolishly ran it down to nothing. Tried jumping from my car - no luck. Today I started troubleshooting and familiarizing myself with the mechanical (I have a little wrenching experience on my car but don't know a thing about carbs or electrical). No spark from any plug. I've checked around and found a lot of similar issues here and it seems that the most likely issues are the ignitors, pulse generator, coils or killswitch. I'm in the process of learning to use an ohmmeter and tomorrow will be attempting to remove the fuel tank and correctly diagnose the issue. Any tips or experience with a like occurrence would be greatly appreciated!
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Old 03-25-2013, 10:31 PM   #2 (permalink)
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I'm having similar issues. After checking I'm thinking it's the pulse generator. Did you ever get yours fixed and if so what did you find?
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Old 03-26-2013, 09:18 AM   #3 (permalink)
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I would suggest that you check the simple things first. It sounds to me as though something could have gotten wet from the storm. Check all electrical connections, all fuses, dry the bike out. leave the car outside for a few days and let the bike have the garage.
“My father says almost the whole world’s asleep. Everybody you know, everybody you see, everybody you talk to.
He says only a few people are awake. And they live in a state of constant total amazement.”

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