Need Help, Suggestion for Noise - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 14 (permalink) Old 06-25-2013, 09:37 PM Thread Starter
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Need Help, Suggestion for Noise

My bike has been running perfect. Went on a 180 run yesterday and bike ran great. Went on a 40 mile ride tonight and bike ran great. Got 2 miles from my house and a strange noise appeared. It sounds like a marble getting spun around in the crankcase. Drained the oil, nothing came out, screen was clean, no rubber or metal. Re-did the MCCTs. Bike runs good, shifts good,starts good. Any suggestions??

JM2001

" Loud Pipes Risk Rights "

2001 Vulcan 750
marbled
TOC upgrade on ACCT
Air/fuel mixture set to 2 1/2 out
rectifier relocated
splines lubed
iridiums
decals removed
upgraded mirrors
Pic up coil mod done
degoated
All LED lighting
Upgraded Mosfet rectifier
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post #2 of 14 (permalink) Old 06-25-2013, 10:07 PM
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That doesn't sound good! Hell, I dunno what it is, lol. I got a couple things in mind, but can't really say if they are even close. Can ya get a video on youtube of the new noise? That'll help us help you better. Don't think I have ever heard anything which sounds like a marble in the crankcase. Take a long screwdriver and steth out different areas of the engine and see if you can pinpoint the area the noise is coming from.

Sorry, that's the best I got. Good luck.

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post #3 of 14 (permalink) Old 06-25-2013, 10:14 PM
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possible pinging? Low quality gas? Too lean? Be very careful Pinging sounds like bb's bouncing around a tin can... Suggest you get some higher octane fuel in there and see if it goes away.... if it does at least you know the problem.

Kenny

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post #4 of 14 (permalink) Old 06-25-2013, 10:18 PM
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exhaust heat shield clamp came loose?
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post #5 of 14 (permalink) Old 06-25-2013, 10:18 PM Thread Starter
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Quote:
Originally Posted by blazblu82 View Post
That doesn't sound good! Hell, I dunno what it is, lol. I got a couple things in mind, but can't really say if they are even close. Can ya get a video on youtube of the new noise? That'll help us help you better. Don't think I have ever heard anything which sounds like a marble in the crankcase. Take a long screwdriver and steth out different areas of the engine and see if you can pinpoint the area the noise is coming from.

Sorry, that's the best I got. Good luck.
Thanks. I've had 8 other Kaws and never heard a noise like this. Does sound like a marble being spun around.

JM2001

" Loud Pipes Risk Rights "

2001 Vulcan 750
marbled
TOC upgrade on ACCT
Air/fuel mixture set to 2 1/2 out
rectifier relocated
splines lubed
iridiums
decals removed
upgraded mirrors
Pic up coil mod done
degoated
All LED lighting
Upgraded Mosfet rectifier
JM2001 is offline  
post #6 of 14 (permalink) Old 06-25-2013, 10:21 PM Thread Starter
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Quote:
Originally Posted by Mercury View Post
possible pinging? Low quality gas? Too lean? Be very careful Pinging sounds like bb's bouncing around a tin can... Suggest you get some higher octane fuel in there and see if it goes away.... if it does at least you know the problem.

Kenny
For sure that's not the problem but thanks. It is something in the crankcase.

JM2001

" Loud Pipes Risk Rights "

2001 Vulcan 750
marbled
TOC upgrade on ACCT
Air/fuel mixture set to 2 1/2 out
rectifier relocated
splines lubed
iridiums
decals removed
upgraded mirrors
Pic up coil mod done
degoated
All LED lighting
Upgraded Mosfet rectifier
JM2001 is offline  
post #7 of 14 (permalink) Old 06-25-2013, 10:52 PM
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Quote:
Originally Posted by JM2001 View Post
For sure that's not the problem but thanks. It is something in the crankcase.
welp keep us posted.

Pinging sounds like it comes from all over the place, when you said marble it sure reminds me of bb's bouncing around.

does it do it at idle speeds as well? transmission in neutral?

Try to give us as much info as you can

kenny

Merc
2000 Vulcan Drifter 800
Roadhouse classic 2 > 1 exhaust
Okie Smokie intake config
Changed jets
52K miles or so, always going up
Corbin Seat
Painted flat black winter '12
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post #8 of 14 (permalink) Old 06-25-2013, 11:05 PM Thread Starter
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Quote:
Originally Posted by Mercury View Post
welp keep us posted.

Pinging sounds like it comes from all over the place, when you said marble it sure reminds me of bb's bouncing around.

does it do it at idle speeds as well? transmission in neutral?

Try to give us as much info as you can

kenny
Does it at idle and any rpm, does it in neutral or any gear. Bike runs fine and shifts fine. Sound seems to come from the front lower half of the engine, ahead of the stator. It is a sound that gets your attention fast. I did do a radiator drain, flush and new coolant 3 days ago but I wouldn't think it would be related to this noise.

JM2001

" Loud Pipes Risk Rights "

2001 Vulcan 750
marbled
TOC upgrade on ACCT
Air/fuel mixture set to 2 1/2 out
rectifier relocated
splines lubed
iridiums
decals removed
upgraded mirrors
Pic up coil mod done
degoated
All LED lighting
Upgraded Mosfet rectifier
JM2001 is offline  
post #9 of 14 (permalink) Old 06-25-2013, 11:08 PM Thread Starter
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Quote:
Originally Posted by slimvulcanrider View Post
exhaust heat shield clamp came loose?
Slim, no they are all tight. I went over the entire bike before my 180 mile ride Sunday.

JM2001

" Loud Pipes Risk Rights "

2001 Vulcan 750
marbled
TOC upgrade on ACCT
Air/fuel mixture set to 2 1/2 out
rectifier relocated
splines lubed
iridiums
decals removed
upgraded mirrors
Pic up coil mod done
degoated
All LED lighting
Upgraded Mosfet rectifier
JM2001 is offline  
post #10 of 14 (permalink) Old 06-25-2013, 11:30 PM
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Quote:
Originally Posted by JM2001 View Post
Does it at idle and any rpm, does it in neutral or any gear. Bike runs fine and shifts fine. Sound seems to come from the front lower half of the engine, ahead of the stator. It is a sound that gets your attention fast. I did do a radiator drain, flush and new coolant 3 days ago but I wouldn't think it would be related to this noise.
What about the impellor for cycling the water? That's in the lower front of the engine.

I only understand what I don't understand.
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