Ready to pull my hair out!!! - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 15 (permalink) Old 09-14-2015, 07:09 AM Thread Starter
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Ready to pull my hair out!!!

Hi guys great site with vast amount of knowledge. Gotta ask an opinion from anyone as to what might be going on with this bike o mine. Rebuilt the engine made sure everything to spec reassembled and put back in bike....everything good with the exception that I cannot get it started. cleaned all grounds....rebuilt starter.....new oil and filter....when trying to start it it seems the engine turns then hesitates, turns and hesitates at regular intervals. Checked for spark on all 4 plugs and seems good. New battery as well. However when I pull one of the plugs and it doesn't matter which one, ( I tried em all) it seems the engine turns over more free and with no hesitation at all. Pulled plugs and dipped in gas put back in and fire immediately out of manifolds. I don't have the pipes on right now but would that make a difference? Any help would be greatly appreciated.
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post #2 of 15 (permalink) Old 09-14-2015, 08:16 AM
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Quote:
Originally Posted by Relic Rider View Post
Hi guys great site with vast amount of knowledge. Gotta ask an opinion from anyone as to what might be going on with this bike o mine. Rebuilt the engine made sure everything to spec reassembled and put back in bike....everything good with the exception that I cannot get it started. cleaned all grounds....rebuilt starter.....new oil and filter....when trying to start it it seems the engine turns then hesitates, turns and hesitates at regular intervals. Checked for spark on all 4 plugs and seems good. New battery as well. However when I pull one of the plugs and it doesn't matter which one, ( I tried em all) it seems the engine turns over more free and with no hesitation at all. Pulled plugs and dipped in gas put back in and fire immediately out of manifolds. I don't have the pipes on right now but would that make a difference? Any help would be greatly appreciated.
Starter clutch problem? Should rotate freely counterclockwise, no movement clockwise. Possible neutral or starter lock out switch problem.

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Upgraded Mosfet rectifier

Last edited by JM2001; 09-14-2015 at 08:20 AM.
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post #3 of 15 (permalink) Old 09-14-2015, 08:24 AM Thread Starter
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Hey thanks for the response!! I have used the safety bypass mod I found in the verses so would that eliminate those possible issues?
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post #4 of 15 (permalink) Old 09-14-2015, 08:43 AM
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Are you sure you have the valve timing right?

Had a similar issue and found the cam chain was off by a tooth on the gear.

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post #5 of 15 (permalink) Old 09-14-2015, 08:49 AM
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check to make sure pickup coils are in right position, not just gap, but if you swap em, it wont run well, if at all

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post #6 of 15 (permalink) Old 09-14-2015, 08:50 AM
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Hey thanks for the response!! I have used the safety bypass mod I found in the verses so would that eliminate those possible issues?
You stated you have good spark ( not electrical problem ). I assume you are getting fuel. That lead me to the starter clutch. Is the one way clutch installed properly? Hold the balancer shaft with a wrench and make sure the starter clutch only rotates counterclockwise. I am suggesting this solution because you tore down the engine.

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 #7 of 15 (permalink) Old 09-14-2015, 08:52 AM
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Clean the ignition switch. Just do it.

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post #8 of 15 (permalink) Old 09-14-2015, 09:23 AM Thread Starter
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I did make sure the cam chains were timed correctly and the pickup coils in the right order....wondering if spark plugs are crapping out....also not sure why the motor would turn more freely with 1 spark plug removed...Any thoughts or would this be normal?
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post #9 of 15 (permalink) Old 09-14-2015, 09:24 AM Thread Starter
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Ignition switch will be cleaned next for sure.
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post #10 of 15 (permalink) Old 09-14-2015, 09:31 AM
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Quote:
Originally Posted by Relic Rider View Post
I did make sure the cam chains were timed correctly and the pickup coils in the right order....wondering if spark plugs are crapping out....also not sure why the motor would turn more freely with 1 spark plug removed...Any thoughts or would this be normal?
Less compression with plug removed

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