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Triple X
Most users ever online was 4,519, September 2, 2015 at 03:26 AM.
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Low RPM vibration when engine is under load
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Low RPM vibration when engine is under load - June 2, 2014, 08:58 AM

  • 2013 Z1000
  • All stock other than M4 slip-ons; no other performance modifiers
  • Almost 13k on the odometer
  • Still has original spark plugs
  • It is a very faint pulsing vibration, feels like it is come from down low on the bike, but not sure
  • Everything clears up above around 3000-3500 rpm
  • It doesn't seem to do it with the clutch pulled in.
  • It started the morning after a riding in a rain storm the night before

EDIT:
  • Mostly occurs below 2000 rpm
  • I can feel it mostly through the footpegs
  • Happens in 1st and 2nd but only below 2000-2500 rpm (I haven't tested higher gears yet)
  • Chain is lubed weekly

Any ideas? Thanks ahead of time.


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Last edited by Southwade; June 2, 2014 at 11:47 AM..
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June 2, 2014, 09:02 AM

Does it do it in neutral too? Can you feel it when the bike is not moving?


trying to figure out if it's engine or drive line specific.


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June 2, 2014, 09:05 AM

Cable clutch I assume? You say it goes away when pulling the clutch in. Wear on the plates maybe? Check the hub nut also.


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June 2, 2014, 09:13 AM

Quote:
Originally Posted by Scot View Post
Does it do it in neutral too? Can you feel it when the bike is not moving?


trying to figure out if it's engine or drive line specific.
I haven't felt it in neutral or at stop. It is possible it's doing it and I haven't felt it then, but I don't think so.

It is a very faint vibration, but it is new and it is definitely there.

Quote:
Originally Posted by dodge131 View Post
Cable clutch I assume? You say it goes away when pulling the clutch in. Wear on the plates maybe? Check the hub nut also.
Yes.

Wouldn't that same clutch wear cause it to slip at higher RPM? I'm not saying your wrong, just wondering.

You're referring to the rear wheel's hub nut, correct? It I'll check it, just to be safe.


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June 2, 2014, 09:16 AM

I would also inspect chain and sprockets. I've had odd vibrations from chains that sometime have frozen or partially frozen links. The vibration is always there, just gets drowned out but all the other vibrations the bike makes at higher RPMS.


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June 2, 2014, 09:18 AM

Quote:
Originally Posted by Scot View Post
I would also inspect chain and sprockets. I've had odd vibrations from chains that sometime have frozen or partially frozen links. The vibration is always there, just gets drowned out but all the other vibrations the bike makes at higher RPMS.
I would be amazed if that was the problem, but I'll check it anyway. I'm pretty anal about chain maintenance.


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June 2, 2014, 09:30 AM

I wasn't sure. Seems to be no middle ground. People are either obsessive with it or do nothing with their chains.


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June 2, 2014, 09:36 AM

Quote:
Originally Posted by Scot View Post
I wasn't sure. Seems to be no middle ground. People are either obsessive with it or do nothing with their chains.
Well, I'm not quite obsessive but it does get lubed very often, once a week or two weeks at the most. I use Dupont Teflon Spray though. Almost no cleaning required; just a quick wipe and the grime comes off. Then I give it a heavy dose of the spray as the engine idles in gear on a stand.

Yes I know this is a big no-no, but I never touch the chain with the engine on.


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June 2, 2014, 09:46 AM

I'm trying to look at it from a simple things first attitude. You mentioned it felt low. That was about as low as I could get without it being tire related.


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June 2, 2014, 09:48 AM

Quote:
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I'm trying to look at it from a simple things first attitude. You mentioned it felt low. That was about as low as I could get without it being tire related.
I'm just hoping it's not the fuggin shaft bearings or some shit. That would be my luck.

I need to stop googling before I convince myself I have stage 10 cancer.


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June 2, 2014, 10:26 AM

I did some testing on the way to lunch. It's most prominent at parking lot speeds. On this bike that's about 1500 to 2000 rpm.


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June 2, 2014, 11:09 AM

Quote:
Originally Posted by Southwade View Post
I did some testing on the way to lunch. It's most prominent at parking lot speeds. On this bike that's about 1500 to 2000 rpm.
Does it do it in different gears?


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June 2, 2014, 11:37 AM

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Does it do it in different gears?
Yes. But it's only noticeable at low rpm.

Excess vibration through the pegs happens only below 2k though. I think the peg vibration may be a harmonic vibration.

It honestly sounds like I'm lugging the engine or something. That kind of pulsing vibration.


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June 2, 2014, 11:50 AM

Sounds like you may own a kawasaki...

I wouldn't totally dismiss it but it doesn't sound like a big deal to me.
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June 2, 2014, 11:53 AM

Quote:
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Sounds like you may own a kawasaki...

I wouldn't totally dismiss it but it doesn't sound like a big deal to me.
Haha, I was hoping someone would tell me what I wanted to hear!

Isn't it odd that it would show up for the first time so long after initial break-in though? Maybe I'm just being paranoid, but it worries me; I really dig this bike.


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