Electrical/Ignition Oddity... - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 6 (permalink) Old 07-18-2013, 07:37 PM Thread Starter
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Electrical/Ignition Oddity...

Greetings, I'm a newbie, so please forgive any lapses in comity.

Anyway, trying to get my '89 VN750 back on the road. It was running fine, until I put it in the garage while a two week spate of rain kept me off the road.

When the weather broke, it wouldn't crank over. Exactly like what a dead battery would do. So I put it on the charger overnight but it didn't work.

What it is doing is clicking - it's a strong, determined click - and the tach will move. Not jump, but move like the engine is being reved. There's no sound like the engine trying to catch, just the clicking. One time, I turned the key to the "On" position and the tach rose.

Any thoughts as to why the tach would be responding to the depressing the start button when the engine isn't cranking over?

I'm leaning towards an electrical short someplace, but I have no idea where to begin to track it down. I'm also thinking the ignition/instrument cluster needs to be replaced.

Thanks all.
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post #2 of 6 (permalink) Old 07-18-2013, 09:03 PM
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After charging it do you get at least 12.5 volts reading on a multi-meter?

Do you get just one "strong determined click" from the starter relay under the right side cover?
If so, that indicates the primary, or "trigger" circuit is complete.

The tach reads off the front ignition coil.

All these odd tach readings/symptoms could be caused by a bad battery.
To test this out, disconnect the mc battery and hook up jumper cables direct from your car battery to the mc cables, then try to start the bike.

Take care to not let the positive cable touch the negative one or the frame.

Finding electrical gremlins is not my strong suit, but this is what I would try first, to determine if the battery is at fault.

Gordon

1991 VN 750 -"Cosmic Lady" or "Bad Girl"?
Purchased May 16, 2008
Approx.19,300km (12,000 miles)

H-D windshield
Relocated R/R
MF-AGM battery
Fiamm Freeway Blaster horns
F&S luggage rack and engine guard
Kury Offset Hiway pegs
July 13, 2016, Riding on the DARKSIDE now, Classic Radial 165/80-15


TOP TEN THINGS A NEW RIDER/OWNER SHOULD DO. Click on link.
https://www.vn750.com/forum/11-vn750-general-discussion/9127-top-ten-items-you-would-suggest-new-owner-do-his-new-ride.html

Last edited by OlHossCanada; 07-18-2013 at 09:05 PM.
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post #3 of 6 (permalink) Old 07-20-2013, 08:34 AM Thread Starter
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Replacing battery

At this point, the battery won't keep a charge. I've had it on the charger now for 24 hours and its still dead.

Looks like I'm going battery shopping.

Thanks.
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post #4 of 6 (permalink) Old 07-20-2013, 04:12 PM Thread Starter
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New Battery, New Life

New Battery worked.... Time for a ride...

Thanks all!
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post #5 of 6 (permalink) Old 07-20-2013, 06:16 PM
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Quote:
Originally Posted by FerruzAXP View Post
New Battery worked.... Time for a ride...

Thanks all!
glad to hear it brother have fun and be safe

Quote:
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i got my helmet but it sure makes licking the windows a chore

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post #6 of 6 (permalink) Old 07-22-2013, 03:51 PM
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I hope you got a new AGM battery and not a wet cell....
Happy riding!
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