Strange noises

edarter · Post by **edarter** » 22 Sep 2003, 13:38

hi - I noticed at the weekend that when my bike is at idle and the clutch is out the tickover is quite lumpy with a kind of knocking, if I pull the clutch lever in the knocking effect goes and the tickover is less lumpy. I thought it may be the balance shaft, but
a) surely that would be the same no matter what I did with the clutch
b) the bike has only done 8000 kilometers

is this something I should be worrying about ? I'm sure it's done it since I bought it but if work needs doing I would rather know than let it get worse...

Thanks

Ed

edarter · Post by **edarter** » 03 Oct 2003, 12:46

any thoughts on this guys ? Is it likely that the balance shaft is on it's way, or just a clutch release bearing thing ???

Thanks

Ed

Phil Neal · Post by **Phil Neal** » 03 Oct 2003, 22:40

my mk2 22k kms does that, if I remember rightly the back wheel goes round on the stand in neutral too....

I think it something to do with drag in the clutch (its wet plate), I'm fairly sure my GSXf did something similar but was less noticable due to...

1) 4 cylinders
2) 750cc
3) 4 stroke
4) heavier wheel.

I'm sure someone will correct if i'm wrong

edarter · Post by **edarter** » 04 Oct 2003, 21:10

cheers Phil - I'll not worry about it then, was just curious more than anything really....

Cheers

Ed

rikkster · Post by **rikkster** » 11 Oct 2003, 01:51

i'd be inclined to think there could be a problem with main bearings. maybe by pulling the clutch in might take end float from the crank, therefore stopping the knocking. this could also could affect the 2 outer crank seals( these need to be in good nick in order for the bike to run tip top) this same problem occurs in motor vehicles with too much end float in the crankshaft. when the clutch is applied the release bearing depresses the pressure plate & pushes the crank foward, therefore taking up the play. hope this helps.

\"RIDE IT LIKE YA STOLE IT\"

edarter · Post by **edarter** » 14 Oct 2003, 17:28

christ - that sounds a bit more serious ! I'm worried now

Russell · Post by **Russell** » 14 Oct 2003, 17:39

Every Honda that I have ever owned has had a bit of clutch rattle that on tickover that stops when you pull the lever in.
This go's for my CRM up to a CRF1000 I owned from new, it is just a characteristic and I am sure nothing to worry about, my CRF 450 has a louder rattle than my CRM and the 450 is only 10 months old.
The clutch on a bike is on the end of a gearshaft not the crankshaft as in a car, which is what an earlier e-mail may have got wrong when diagnosing the mains.

Regards

Russell.

edarter · Post by **edarter** » 15 Oct 2003, 17:18

phew !!!

Bargos · Post by **Bargos** » 16 Oct 2003, 11:04

Hi Ed,

Im with Russell on this one - my old 500/4 did exactly the same thing. If the main bearings are on their way out they will be noisy as hell ALL the time and not just when you pull the clutch in.

Nothing to worry about,

Vince · Post by **Vince** » 09 Jan 2004, 02:00

i would sugest checking the clutch center nut has not worked loose or that the clutch basket is worn had the same problem on my old TS250X
Vince

crm250mk2 · Post by **crm250mk2** » 28 Jul 2008, 18:39

hi ive got a crm 250 mk2 and there's 2 clutch baskests i think..

theres a inner one and a outer one and the basket is loose on there and im wonderin if that could be causing the knocking noises on my bike!!

its in a million bits at the moment lol

:(

Post by **kernow krusty** » 28 Jul 2008, 20:20

Its the clutch - lots of bikes do the same. As long as you change the gearbox oil regularly and use a good spec - see tech posts here for advice, it'll be fine. (That helps keep the balance shaft happy too).
Regards KK

Strange noises

Strange noises

knocking & lumpy idle.

Re: Strange noises

Re: Strange noises