R/R, Stator, Battery? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 9 (permalink) Old 08-28-2015, 12:14 PM Thread Starter
FastHamFreddy
 
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R/R, Stator, Battery?

When I go to start the bike it will start to turn over the first or second try (not very hard though) then it will stop. The RPM's will go up on the tachometer, but nothing else will happen.

Is this a faulty stator? Faulty battery? or faulty rr? all three have been replaced, but i am not sure what else it could be.

1987 Vulcan 750

What Has Been Done:
New Battery
Stator Mod
Spline Lube
Starter Relay - replaced
Ignition Coils - replaced
ACCT's to MCCT's
Seat Mod
Re-position Rear Blinkers
New Fork Seals
Lowered Shocks
Ear Shave
Coaster Mod

Still to come:
Remove air box
Side Mount License Plate
Re-Position Horns
New Mirrors
New Exhaust
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post #2 of 9 (permalink) Old 08-28-2015, 12:59 PM
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just a little clarification of terms.. turn over then stop? do you mean it starts then stops, or cranks (not starting) and stopping?

2005 VN750

Sold 11-27-17
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post #3 of 9 (permalink) Old 08-28-2015, 02:09 PM Thread Starter
FastHamFreddy
 
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It cranks maybe once or twice (does not start). But then wont even crank after that. Like it is trying to start but there is not enough juice to start it. If I charge it I can get it to start and runs fine. It seems to be on a short ride that it wont start again.

1987 Vulcan 750

What Has Been Done:
New Battery
Stator Mod
Spline Lube
Starter Relay - replaced
Ignition Coils - replaced
ACCT's to MCCT's
Seat Mod
Re-position Rear Blinkers
New Fork Seals
Lowered Shocks
Ear Shave
Coaster Mod

Still to come:
Remove air box
Side Mount License Plate
Re-Position Horns
New Mirrors
New Exhaust
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post #4 of 9 (permalink) Old 08-28-2015, 02:15 PM
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The rpms go up but "nothing" happens? They do this without the motor even turning?


Yes, you need to be more clear on what's happening...is the battery charged?

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post #5 of 9 (permalink) Old 08-28-2015, 02:19 PM
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Well, charge the battery, start the bike and use a multi tester to see how many volts you have at the battery with the bike running. If you have less than 13.4 your not charging the battery when the bike runs.

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post #6 of 9 (permalink) Old 08-28-2015, 02:20 PM Thread Starter
FastHamFreddy
 
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Yes when I hit that start button the engine will start to crank but not start. Then it will stop cranking, but the tachometer will go up to 5 or 6 rpm's. I am guessing the battery is not charged, because if I jump it it will start. However I went for about and hour ride the other day came home and started it 4 or 5 times no problem sat over night and the next day (yesterday) I went for a ride to the store about 10 minutes down the road. Turned off the bike and when I went to get back on it would not start. Did what is stated above.

Long story short got it home jumped it and started right up. Then turn it off and try to start it with no jumper cables and it would not start did again what is stated above. Tries to crank then stops (does not start) but rpms go up.

I apologies I am trying to explain to the best of my abilities but again really am not that mechanically advanced. The fact I have gotten this far surprises me, and really just want to get it running so I dont have to take it apart every time i ride haha

1987 Vulcan 750

What Has Been Done:
New Battery
Stator Mod
Spline Lube
Starter Relay - replaced
Ignition Coils - replaced
ACCT's to MCCT's
Seat Mod
Re-position Rear Blinkers
New Fork Seals
Lowered Shocks
Ear Shave
Coaster Mod

Still to come:
Remove air box
Side Mount License Plate
Re-Position Horns
New Mirrors
New Exhaust
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post #7 of 9 (permalink) Old 08-28-2015, 03:00 PM
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If you have a multi-meter, set it up for 12 volts DC and above, and check the battery before you try and start the engine. The battery should at least be 12 volts at this point. If it is less, charge it back up. With a fully charged battery, start the engine and test the voltage with the engine running. it should be around 13.5 or more volts above 3,000 RPM. If the voltage does rise up as stated, the charging system is ok. If the voltage never reaches 13.5 volts with the engine running above 3,000 rpm's, something is out of order with either the stator or regulator. If so, follow the guide lines in the forum to test those components.
If the charging system is ok, and the battery looses it's charge overnight, the battery is old and needs replaced. Generally a battery does not last more than 2 to 3 years on a motorcycle unless it is a high-end battery.

'99 VN750, all stock
performed driveshaft maintenance
checked the ACCT using the Grambo Trick
Sycned carbs with flow meter
Yuasa YTX14AHL-BS AGM Battery
NGK DPR7EIX-9 Irridium Spark Plugs
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post #8 of 9 (permalink) Old 08-28-2015, 05:55 PM
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Make sure all your grounds (connections) are tight.

02 honda sabre 1100
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post #9 of 9 (permalink) Old 08-29-2015, 01:52 AM
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Quote:
Originally Posted by FastHamFreddy View Post
When I go to start the bike it will start to turn over the first or second try (not very hard though) then it will stop. The RPM's will go up on the tachometer, but nothing else will happen.

Is this a faulty stator? Faulty battery? or faulty rr? all three have been replaced, but i am not sure what else it could be.
When you replaced the battery you put in a Maintenance Free- Absorbed Glass Mat (MF-AGM) one I hope. These are also sometimes referred to as sealed batteries, although that is a misnomer as they do have a vent.

The Deka in this link is a good one:
http://www.ebay.com/itm/Deka-ETX15L-..._Parts&vxp=mtr

When I purchased my '91 model in 2008 it still had a wet cell battery with 6 filler caps to add water occasionally. When I went for a ride and stopped for fuel, or some other reason, it wouldn't start until it had sat for 10 minutes or so. It would generally start again then after those few minutes. When I changed the wet cell out for the MF battery, most of my starting problems were solved.

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
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