Question about 2003 kawasaki VN 750 Vulcan

3 Answers

Backfires during deceleration

When useing engin to slow down my 03 kawasaki 750valca backfires.if I pull in the clutch it stops.

Posted by sirgrill on

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3 Answers

Douglas Hansen

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Check a spark plug for color. A white plug means that it's too lean (Not enough fuel) They will pop when lean on decel!

Posted on Jul 10, 2009

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Keith Bowers

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Usually caused by unburned fuel escaping the combustion chamber (through exhaust valve. Check idle fuel mixture,(either too lean OR too rich will cause the problem, but too lean will also have driveability problems while too rich will 'run good') idel speed, and exhaust valve clearance.

Posted on Sep 19, 2009

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ka9ior

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Mine did that when I had a bad connector on the spark plug. I replaced it with an NKG part (MUCH less expensive than stock) and it quit happening.

Posted on Feb 08, 2015

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1995 KLE500 Kawasaki: neutral blue light doesn't show and when clutch is released to engage in gear, engine cuts off


Hi, Ishmael the ignition circuit cut-off system comprising of the side stand switch, clutch switch and neutral switch has the following functions:
a. It prevents starting when the transmission is in gear and the side stand is up, but the clutch lever is not pulled.
b. It prevents starting when the transmission is in gear and the clutch lever is pulled, but the side stand is still down.
c. It cuts the running engine when the transmission is in gear and the side stand is moved down.
Periodically check the operation of the ignition circuit cut-off system according to the following tests.
With the engine turned off:
1. Move the side stand down.
2. Make sure that the engine stop switch is set to "RUN"
3. Turn the key to "ON".
4. Shift the transmission into the neutral position.
5. Push the start switch if the engine does not start the neutral switch may be faulty.
With the engine still running:
6. Move the side stand up.
7. Keep the clutch lever pulled.
8. Shift the transmission into gear.
9. Move the side stand down if the engine does not stall you may have a faulty side stand switch.
After the engine has stalled:
10. Move the side stand up.
11. Keep the clutch lever pulled.
12. Push the start switch if the engine does not start you may have a faulty clutch switch.
This check is most reliable if performed with a warmed-up engine.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Kawasaki KLE 500 dies when clutch is released
http://www.kawasakimotorcycle.org/forum/kawasaki-cruisers/66113-gears-wont-engage.html
Kawasaki KLE500 Service Manual
OEM Parts for Kawasaki
http://www.kawasaki-techinfo.net/searchOM.php?view_lang=EN&spec=OC&

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Apr 11, 2017 | kawasaki KLE 500 Motorcycles

1 Answer

Hi, H650, working fine, then erratically just stop, seems electrical problem, side stand switch were suspicious, took it off and bridged the wires, the same problem, Thx


Hi, Tamas the ignition circuit cut-off system comprising of the side stand switch, clutch switch and neutral switch has the following functions:
a. It prevents starting when the transmission is in gear and the side stand is up, but the clutch lever is not pulled.
b. It prevents starting when the transmission is in gear and the clutch lever is pulled, but the side stand is still down.
c. It cuts the running engine when the transmission is in gear and the side stand is moved down.
Periodically check the operation of the ignition circuit cut-off system according to the following tests.
With the engine turned off:
1. Move the side stand down.
2. Make sure that the engine stop switch is set to "RUN"
3. Turn the key to "ON".
4. Shift the transmission into the neutral position.
5. Push the start switch if the engine does not start the neutral switch may be faulty.
With the engine still running:
6. Move the side stand up.
7. Keep the clutch lever pulled.
8. Shift the transmission into gear.
9. Move the side stand down if the engine does not stall you may have a faulty side stand switch.
After the engine has stalled:
10. Move the side stand up.
11. Keep the clutch lever pulled.
12. Push the start switch if the engine does not start you may have a faulty clutch switch.
This check is most reliable if performed with a warmed-up engine.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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Kawasaki Ninja 650 Service Manual
OEM Parts for Kawasaki
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Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Apr 01, 2017 | 2008 kawasaki Ninja 650R

1 Answer

1996 Kawasaki VN 1500 Vulcan Classic shuts off with the clutch lever out in neutral


Hi, Anonymous the ignition circuit cut-off system comprising of the side stand switch, clutch switch and neutral switch has the following functions:
a. It prevents starting when the transmission is in gear and the side stand is up, but the clutch lever is not pulled.
b. It prevents starting when the transmission is in gear and the clutch lever is pulled, but the side stand is still down.
c. It cuts the running engine when the transmission is in gear and the side stand is moved down.
Periodically check the operation of the ignition circuit cut-off system according to the following tests.
With the engine turned off:
1. Move the side stand down.
2. Make sure that the engine stop switch is set to "RUN"
3. Turn the key to "ON".
4. Shift the transmission into the neutral position.
5. Push the start switch if the engine does not start the neutral switch may be faulty.
With the engine still running:
6. Move the side stand up.
7. Keep the clutch lever pulled.
8. Shift the transmission into gear.
9. Move the side stand down if the engine does not stall you may have a faulty side stand switch.
After the engine has stalled:
10. Move the side stand up.
11. Keep the clutch lever pulled.
12. Push the start switch if the engine does not start you may have a faulty clutch switch.
This check is most reliable if performed with a warmed-up engine.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
engine dies when let out clutch in gear Kawasaki Vulcan Forum Vulcan Forums
Let out the clutch and she stalls Any ideas
http://xn--80azbq.xn--p1ai/failo/Kawasaki_VN1500__87-_99_Service_Manual.pdf
OEM Parts for Kawasaki
1996 Kawasaki Vulcan 1500 Classic Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Apr 22, 2014 | 1996 kawasaki VN 1500 Vulcan Classic

1 Answer

1997 Kawasaki EN 500 Vulcan Classic dies when the clutch lever is released


Hi, Anonymous the ignition circuit cut-off system comprising of the side stand switch, clutch switch and neutral switch has the following functions:
a. It prevents starting when the transmission is in gear and the side stand is up, but the clutch lever is not pulled.
b. It prevents starting when the transmission is in gear and the clutch lever is pulled, but the side stand is still down.
c. It cuts the running engine when the transmission is in gear and the side stand is moved down.
Periodically check the operation of the ignition circuit cut-off system according to the following tests.
With the engine turned off:
1. Move the side stand down.
2. Make sure that the engine stop switch is set to "RUN"
3. Turn the key to "ON".
4. Shift the transmission into the neutral position.
5. Push the start switch if the engine does not start the neutral switch may be faulty.
With the engine still running:
6. Move the side stand up.
7. Keep the clutch lever pulled.
8. Shift the transmission into gear.
9. Move the side stand down if the engine does not stall you may have a faulty side stand switch.
After the engine has stalled:
10. Move the side stand up.
11. Keep the clutch lever pulled.
12. Push the start switch if the engine does not start you may have a faulty clutch switch.
This check is most reliable if performed with a warmed-up engine.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Let out the clutch and she stalls Any ideas
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OEM Parts for Kawasaki
1997 Kawasaki Vulcan 500 LTD Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Jan 29, 2014 | 1997 kawasaki EN 500 Vulcan Classic

1 Answer

R1 stalling when cold during deceleration


Usually the first thing to do in situations like this is to give the bike a good service. Especially the filters.

Apr 07, 2013 | 2006 Yamaha YZF-R1

1 Answer

2002 Kawasaki VN 1500 Vulcan Drifter kickstand down in neutral dies when clutch released


Hi, Anonymous the ignition circuit cut-off system comprising of the side stand switch, clutch switch and neutral switch has the following functions:
a. It prevents starting when the transmission is in gear and the side stand is up, but the clutch lever is not pulled.
b. It prevents starting when the transmission is in gear and the clutch lever is pulled, but the side stand is still down.
c. It cuts the running engine when the transmission is in gear and the side stand is moved down.
Periodically check the operation of the ignition circuit cut-off system according to the following tests.
With the engine turned off:
1. Move the side stand down.
2. Make sure that the engine stop switch is set to "RUN"
3. Turn the key to "ON".
4. Shift the transmission into the neutral position.
5. Push the start switch if the engine does not start the neutral switch may be faulty.
With the engine still running:
6. Move the side stand up.
7. Keep the clutch lever pulled.
8. Shift the transmission into gear.
9. Move the side stand down if the engine does not stall you may have a faulty side stand switch.
After the engine has stalled:
10. Move the side stand up.
11. Keep the clutch lever pulled.
12. Push the start switch if the engine does not start you may have a faulty clutch switch.
This check is most reliable if performed with a warmed-up engine.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
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Feb 26, 2013 | 2002 kawasaki VN 1500 Vulcan Drifter

1 Answer

1999 Kawasaki VN 750 Vulcan the bike dies when releasing the clutch lever


Hi, Dustin the ignition circuit cut-off system comprising of the side stand switch, clutch switch and neutral switch has the following functions:
a. It prevents starting when the transmission is in gear and the side stand is up, but the clutch lever is not pulled.
b. It prevents starting when the transmission is in gear and the clutch lever is pulled, but the side stand is still down.
c. It cuts the running engine when the transmission is in gear and the side stand is moved down.
Periodically check the operation of the ignition circuit cut-off system according to the following tests.
With the engine turned off:
1. Move the side stand down.
2. Make sure that the engine stop switch is set to "RUN"
3. Turn the key to "ON".
4. Shift the transmission into the neutral position.
5. Push the start switch if the engine does not start the neutral switch may be faulty.
With the engine still running:
6. Move the side stand up.
7. Keep the clutch lever pulled.
8. Shift the transmission into gear.
9. Move the side stand down if the engine does not stall you may have a faulty side stand switch.
After the engine has stalled:
10. Move the side stand up.
11. Keep the clutch lever pulled.
12. Push the start switch if the engine does not start you may have a faulty clutch switch.
This check is most reliable if performed with a warmed-up engine.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Clutch kill switch Kawasaki Vulcan 750 Forum Kawasaki VN750 Forums
bike dies when releasing the clutch
Kawasaki VN 750 Service Manual
OEM Parts for Kawasaki
1999 Kawasaki Vulcan 750 Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Jun 09, 2012 | 1999 kawasaki VN 750 Vulcan

1 Answer

Low end backfire and slow acceleration


its drawing too much air in to the intake bypassing the injectors/air flow sensor check the inlet manifold gasket and all the seals like injector seals or gaskets etc

Jan 22, 2018 | 1997 Ford Explorer AWD

1 Answer

2005 Kawasaki Vulcan 2000 the neutral safety switch not working


Hi, Roadstar1761 the ignition circuit cut-off system comprising of the side stand switch, clutch switch and neutral switch has the following functions:
a. It prevents starting when the transmission is in gear and the side stand is up, but the clutch lever is not pulled.
b. It prevents starting when the transmission is in gear and the clutch lever is pulled, but the side stand is still down.
c. It cuts the running engine when the transmission is in gear and the side stand is moved down.
Periodically check the operation of the ignition circuit cut-off system according to the following tests.
With the engine turned off:
1. Move the side stand down.
2. Make sure that the engine stop switch is set to "RUN"
3. Turn the key to "ON".
4. Shift the transmission into the neutral position.
5. Push the start switch if the engine does not start the neutral switch may be faulty.
With the engine still running:
6. Move the side stand up.
7. Keep the clutch lever pulled.
8. Shift the transmission into gear.
9. Move the side stand down if the engine does not stall you may have a faulty side stand switch.
After the engine has stalled:
10. Move the side stand up.
11. Keep the clutch lever pulled.
12. Push the start switch if the engine does not start you may have a faulty clutch switch.
This check is most reliable if performed with a warmed-up engine.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
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Jul 21, 2011 | 2005 kawasaki Vulcan 2000

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