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2003 bandit 1200 knock on right side of motor

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Newbybiker24
L Plate Warrior



Joined: 06 Apr 2020
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PostPosted: 22:03 - 06 Apr 2020    Post subject: 2003 bandit 1200 knock on right side of motor Reply with quote
Someone please help I just recently got a 2003 bandit 1200s a month or two ago and just recently I've been noticing a knocking kinda noise at idle and low revs and I'm stuck I have no experience in working on bikes so I'm helpless just wandering if any of you guy could point me in the right direction I will include a video of the noise kinda hard to hear but let me know what you think thanks
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Pete.
Super Spammer



Joined: 22 Aug 2006
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PostPosted: 22:07 - 06 Apr 2020    Post subject: Reply with quote
That sounds like a mis-fire causing the clutch to rattle on the backplate every once in a while.
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132.9mph off and walked away. Gear is good, gear is good, gear is very very good Very Happy
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Newbybiker24
L Plate Warrior



Joined: 06 Apr 2020
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PostPosted: 22:15 - 06 Apr 2020    Post subject: Reply with quote
Someone told me it sounded like a bad cam chain moving about and where would I even begin with diagnosing a misfire plugs wires?
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Nobby the Bastard
Harley Gaydar



Joined: 16 Aug 2013
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PostPosted: 09:05 - 07 Apr 2020    Post subject: Reply with quote
Newbybiker24 wrote:
Someone told me it sounded like a bad cam chain moving about and where would I even begin with diagnosing a misfire plugs wires?


I'd start with checking the spark plugs.
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Newbybiker24
L Plate Warrior



Joined: 06 Apr 2020
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PostPosted: 23:53 - 07 Apr 2020    Post subject: Reply with quote
Put all new plugs in ngk brand even checked all the wires and seemed fine sound is really audible at the back right of the bike like maybe its come from the clutch case I'm not sure
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Pete.
Super Spammer



Joined: 22 Aug 2006
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PostPosted: 12:09 - 08 Apr 2020    Post subject: Reply with quote
Newbybiker24 wrote:
Put all new plugs in ngk brand even checked all the wires and seemed fine sound is really audible at the back right of the bike like maybe its come from the clutch case I'm not sure


It is coming from the clutch cover. It's probably idling a bit lean and causing a mis-fire. The clutch sits on a back-plate with shock absorbing springs and they are prone to getting loose and rattling when not under load so the misfire is causing that periodic 'knock'. It causes no harm apart from being a bit noisy.

To sort it out you could probably service the carbs and richen up the is mixture but especially given your novice status I would say don't touch the damn thing, it starts and runs and that issue will not cause you any problems when riding.

Touching the carbs might (probably will) open up a bigger can of worms. It's an old bike that was a bit agricultural when it was new. It's going to be a bit noisy now.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good Very Happy
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