RPM increase with no acceleration

DNTBLNK

Joined: 06/17/11

Posts: 8

RPM increase with no acceleration
06/07/14 9:06 AM

Guys I need some help. I own an 08 ZX14 with a little over 10,000 miles now.
While out riding yesterday, I noticed that when changing gears my rpm gauge
would rapidly increase with little acceleration between gears. What could this issue be?

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Rook

Joined: 03/28/09

Posts: 20589

RE: RPM increase with no acceleration
06/07/14 5:28 PM

Does the engine sound like it is also rapidly increasing in rpm or is it just the tach?

If the motor is revving and your not accelerating much, that sounds like a slipping clutch. I recently had that and it was all due to a bad clutch lever. No harm to the bike.

'08 MIDNIGHT SAPPHIRE BLUE Now Deceased

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DNTBLNK

Joined: 06/17/11

Posts: 8

RE: RPM increase with no acceleration
06/07/14 10:03 PM

Yes the engine is increasing as well but just no pull to it.

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Hub

Joined: 02/05/09

Posts: 13719

RE: RPM increase with no acceleration
06/08/14 12:23 AM

1+ Rook.

Remove oil cap. Smell for clean oil or a burnt scent to it. Either smell the cap or smell the hole. Take a photo of the clutch in that hole.

Tormenting the motorcycling community one post at a time

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Danno

Location:

Southwestern Illinois

Joined: 12/18/11

Posts: 2142

RE: RPM increase with no acceleration
06/08/14 7:21 AM

Either your clutch is slipping or you're not letting off the throttle completely when you pull the lever to shift.

'07 CPB Blue; ZGST windscreen with MRA X-screen adjustable spoiler, tube bar adaptor, PC III, ATRE,BMC air filter, modified stock seat with 2nd Look cover,Scorpion Flame Ti slip-ons, Galfer rotors front and rear, braided-stainless lines, C-F 10R front fender, C-F hugger, C-F inner fairing panels, painted foreman's fins with faux C-F inlay, polished rim lips wired for heated gear and accessories, Givi V35 side bags and E41 topcase with SW-Motech qd mounts

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Grn14

Location: Montana

Joined: 02/25/09

Posts: 15511

RE: RPM increase with no acceleration
06/08/14 12:06 PM

I guess just for shits and giggles you could try upshifting without the clutch...see what happens there?

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Rook

Joined: 03/28/09

Posts: 20589

RE: RPM increase with no acceleration
06/08/14 4:43 PM

if your clutch is slipping, it will probably do it when you shift into the next gear but also under heavy load (higher rpm wide/fast throttle openings) without even touching the clutch lever. You may notice the slip more in the higher gears than the lower gears.

* Last updated by: Rook on 6/8/2014 @ 4:43 PM *

'08 MIDNIGHT SAPPHIRE BLUE Now Deceased

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