2nd Gear Jerking - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 8 (permalink) Old 05-24-2012, 08:50 PM Thread Starter
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2nd Gear Jerking

My bike will "jerk" while rev-ing through 2nd gear. As I rev up the jerking becomes more apparent & with greater frequency in the higher RPM's. What can be causing it & how do I.fix it?
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post #2 of 8 (permalink) Old 05-24-2012, 08:57 PM
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could be clutch adjustment or worn clutch plates I suppose.

maybe rear splines?? but I would assume that would not happen just in second gear.

maybe change the oil with a good 10W-40 (don't use 30 weight oil or anything labeled "energy saving") oil and inspect the screen to see what is in the oil. Look for clutch wear particles or any other debris stuck to the screen behind the drain plug on the left side.

that should tell you a lot without tearing into the case.
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post #3 of 8 (permalink) Old 05-25-2012, 08:53 AM
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If it only does this in 2nd gear....and not 3rd 4th or 5th.... You got a bad gear or a bent/ broken shifter fork. Only fix is to take the motor apart.

If it does this in other gears too....could be your clutch or drive splines.

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post #4 of 8 (permalink) Old 05-25-2012, 09:16 AM
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Welcome to the forum arstrock.
Knifemaker may have this nailed, but I'm a little unclear on your exact issue. I've never heard of this before.
Is the bike new to you?
Did this just start happening?
Are you an agressive shifter?
Does it happen every time you are "revving" through second, or just sometimes?
So, in second gear, when you are rapidly accelerating, the jerking starts and continues until pulling the clutch for third gear?
If you let off and then throttle again, does it stop?
Does it still jerk under more normal acceleration?

Have you gone through adjustments to the cable, clutch lever?
Have you changed the oil lately? What are you using?
Where do you live (climate)?

~~C8> Ratt
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'91 VN750 - Cosmic Splendor/Candy Wine
Done: Coastered, .020 ign., Iridiums, VM
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post #5 of 8 (permalink) Old 05-25-2012, 11:07 AM
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You forgot "how old are you?" and "what color is your bike?" ..LOL




Quote:
Originally Posted by ZCraggRatt View Post
Welcome to the forum arstrock.
Knifemaker may have this nailed, but I'm a little unclear on your exact issue. I've never heard of this before.
Is the bike new to you?
Did this just start happening?
Are you an agressive shifter?
Does it happen every time you are "revving" through second, or just sometimes?
So, in second gear, when you are rapidly accelerating, the jerking starts and continues until pulling the clutch for third gear?
If you let off and then throttle again, does it stop?
Does it still jerk under more normal acceleration?

Have you gone through adjustments to the cable, clutch lever?
Have you changed the oil lately? What are you using?
Where do you live (climate)?

If You Are Not Sure If I Am Joking or Not....I AM !!Photos:
http://www.flickr.com/photos/knifemaker1954/sets/
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post #6 of 8 (permalink) Old 05-25-2012, 12:18 PM
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Quote:
Originally Posted by Knifemaker View Post
You forgot "how old are you?" and "what color is your bike?" ..LOL
Yes, yes ... many questions ...

I guess I just have an interest in learning about this issue ...

much to learn ...

~~C8>
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post #7 of 8 (permalink) Old 08-20-2012, 05:17 AM Thread Starter
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Well that is no longer a current issue since the cam chain tensioner broke so I swapped out engines on my VN750 bobber project bike. I will rebuild the engine & let you know what it was.
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post #8 of 8 (permalink) Old 08-20-2012, 09:50 AM
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Quote:
Originally Posted by arstrock View Post
Well that is no longer a current issue since the cam chain tensioner broke so I swapped out engines on my VN750 bobber project bike. I will rebuild the engine & let you know what it was.
Was it a stock ACCT?

Sorry to hear about the engine

1986 Kawasaki Vulcan 750
NGK Iridium Plugs #7803/DPR7EIX-9
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Coastered & Shaved
TOC MCCTs
Metzeler ME880 [110/90-19, 170/80-15]
Balance Dampers Replaced
Tuxedo Mod
Rebuilt Forks w/ Progressive Springs
V&H Cruzers
VN750.com Grill Cover
Meanstreak Seat
Emgo 23-92411 Handlebars
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1990 Kawasaki Vulcan 750

1998 Honda VFR800 FI

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