Engine just shuts off ... Help? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 27 (permalink) Old 08-14-2014, 12:22 PM Thread Starter
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Engine just shuts off ... Help?

So I just got my bike back on the road after fixing my ACCT's (converted them to MCCT's) for two days in a row I have gone out and started my bike and it runs great. I take off to go to work and I get to the same place and it just shuts down like I hit the kill switch and then unable to restart. I'm at a loss I dont know what could be the problem. Any input on this would be greatly appriciated.
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post #2 of 27 (permalink) Old 08-14-2014, 01:25 PM
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I can at least empathize with you. Mine suddenly started doing exactly the same thing when it had been running perfectly. After eliminating other potential problems and concluding that it was flooding out, I shipped the carbs off for overhaul. Still waiting to get them back. I hope this fixes my problem but won't know for sure until I get the carbs reinstalled. Sorry I couldn't offer some suggestions but I'm sure others will weigh in soon.

"Katie"
2002 VN 750, stock except for accessories
Mustang seat
Super Bright LED brake strobe on trunk
About 25k miles
All drive train maintenance performed, drive shaft coupler replaced
Way more experienced at pulling VN 750 carbs than I ever wanted to be.
TOC ACCT rebuild kits installed
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VN sold, current steed Honda ST 1300
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post #3 of 27 (permalink) Old 08-14-2014, 01:36 PM
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ignition switch can cause that.

might be something about that section of road (bumps, turns, vibrations) that trigger it to fail.

also, possible pinched wiring under the neck covers

more specific info on whats happening when it shuts off will help narrow it down a lot. such as, turns, bumps, climbing a hill, going down a hill, ect.

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post #4 of 27 (permalink) Old 08-14-2014, 01:38 PM
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I had my bike shut off mysteriously one time.. happened when I reached across with my left hand to adjust right hand mirror. I bumped the kill switch!
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post #5 of 27 (permalink) Old 08-14-2014, 02:59 PM Thread Starter
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i was at the same exact stop sign when it happened road is flat and no bumps. i was able to crank the engine over after it died but it didnt start back up. later in the day yesterday i when i got back to the bike it started right back up no issue. so frustrating.
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post #6 of 27 (permalink) Old 08-14-2014, 03:05 PM
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Yep, clean that ignition switch and then zip tie the puck tight together so the contacts can't separate. Of all the p[roblems I ever had, the ignition switch was the only one that would make the bike just stop. Not even sputter. Just turn off. Except the lights would stay on if I recall. Or sometimes not.

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post #7 of 27 (permalink) Old 08-14-2014, 03:05 PM
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Might be a long shot, but could be your side stand switch...

Is your side stand snug, or does it move around?

------------------------------
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Atlanta, GA
Current Ride: 1995 Vulcan 88 (1500A9)
Purchased Dec. 2014
approx. 6,800 miles

Previous Bike: 2000 VN750 "Glory"
With homemade stator
Details on stator build here

"Four wheels move the body. Two wheels move the soul"

"You live more in 5 minutes on a bike like this going flat out than some people live in their lifetime." - Burt Munro
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post #8 of 27 (permalink) Old 08-14-2014, 03:42 PM
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Flooding

For me the tell tale sign is that he was stopped. It sounds to me that it may be flooding when it gets to a low idle. He states that if he lets it sit and goes back later it starts. Try turning the mix screws back a half a turn and see if it makes a difference. That is classic flooding or a temp issue in my opinion. I would check those two things and get back with results.
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post #9 of 27 (permalink) Old 08-14-2014, 05:01 PM Thread Starter
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that is what i was thinking as well with the flooding issue but as im new to Motorcycle mechanics im not exactly sure what i am doing here (been working on cars for years) i have a clymer so ill try to consult that. as for the temp Issue im not sure what ya mean, are you talking about checking the coolant?
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post #10 of 27 (permalink) Old 08-14-2014, 05:02 PM Thread Starter
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Side stand is snug and doesnt move around at all.
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