ZX9R Noise at idle please help

jpsl · Derestricted Danger Joined: 27 Aug 2010 Karma :

Hi every one my zx9r b4 model is making like a single knock noise at idle im not sure what it could be as ive been told differnt things about it just woundering if any of you have a idea what i can do to find out exatly what it is and hopefully get it sorted first time leave a post and or msg me and ill get bk to you asap thanks in advance ;o)

Whosthedaddy · Super Spammer Joined: 11 Dec 2005 Karma :

Is it only on idle?

Kwaks do make a racket when idling.
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jpsl · Derestricted Danger Joined: 27 Aug 2010 Karma :

Hi ive been told that too as clutch rattle or cam chain rattle or chims etc but yes only at idle, when you rev it or ride it it sounds perfect i find it annoying though as would preffer it to not do that any idea what it may be or how i can find out what it is? so i can sort it out thanks ;o)

0l0dom0l0 · World Chat Champion Joined: 21 Oct 2009 Karma :

describe what it sounds like then?

iooi · Super Spammer Joined: 14 Jan 2007 Karma :

Does it disapear when you pull the clutch in ?

Yes, its the clutch.
No, its more likely to be cam chain.
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jpsl · Derestricted Danger Joined: 27 Aug 2010 Karma :

yeap still does it with clutch pulled in so camchain and tensioner, is there a way of testing it before stripping it all apart?

jpsl · Derestricted Danger Joined: 27 Aug 2010 Karma :

0l0dom0l0 its sounds like a ding every second or so other then that when rev or ride it sounds perfect

Fisty · Super Spammer Joined: 11 Apr 2007 Karma :

B Models are prone to the generator chain going slack and making orrible noises at tickover. Its probably that.

The people at www.zx-9r.net are a a very helpful bunch of folk.

Your headgasket will go soon. They do on a boringly regular basis on B models.

Tom
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jpsl · Derestricted Danger Joined: 27 Aug 2010 Karma :

what on earth is a generator chain or do you mean cam chain?
and ive done 25000 miles and never had a problem with head gasket
any way still not sure what the noise is so its going to davefox for inspection 1st as to many problems listed and i cant work out wich one it is lol so ill let them work it out 1st will let you lot know what the reult is thanks for replys by the way ;o)

Barry_M2 · World Chat Champion Joined: 09 Sep 2004 Karma :

rob c · Nova Slayer Joined: 15 Apr 2010 Karma :

Fisty · Super Spammer Joined: 11 Apr 2007 Karma :

Barry_M2 · World Chat Champion Joined: 09 Sep 2004 Karma :

As I posted above, a ding every second or so would not be engine related.

I've stripped, built, tuned and big bored a lot of these B model (same as ZXR750 motor) engines. I know them inside out.

I currently have one I'm just finishing building right now, and believe me, they do not 'ding' Wink

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Fisty · Super Spammer Joined: 11 Apr 2007 Karma :

Barry_M2 · World Chat Champion Joined: 09 Sep 2004 Karma :

Ha ha, yes, I forgot that was you I got it from!!

That motor was full of water, the pistons were stuck solid in the barrells so I've had to replace it all.

I've had a couple more since then, too. fix up and sell on jobs, but this one sort of got put on a shelf and left for a while when I realised how bad the top end was. I actually binned the head altogether and have a real nice reconed one going on it.
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Fisty · Super Spammer Joined: 11 Apr 2007 Karma :

Really???? sorry, I had no idea it was like that. WTF caused it? I only stored it outside for 24 hours. Im positive it came out of the running bike as I scrapped the engine with the blown headgasket.

(sorry to hijack the thread op)
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Barry_M2 · World Chat Champion Joined: 09 Sep 2004 Karma :

It wasn't a problem, most of the other parts sold easy enough anyway.

I had most of the parts to fix it up, but sort of forgot about it for a while! Just dug it out recently and got a set of pistons for it, just need to get a head gasket for it now and it's ready to rock!
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