cold start ticking sound, running scraping sound

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cold start ticking sound, running scraping sound

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CBR Forums >> Current Honda CBR Models >> CBR 600F4i >> cold start ticking sound, running scraping sound

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cold start ticking sound, running scraping sound - 4/1/2008 3:38:59 PM

ampfp

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Joined: 9/11/2006
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1> I get a ticking at around 5 times/sec when I start the bike from cold. It lasts for around 10 seconds and varies with engine rpm. Then it's gone and returns only when I keep it off for a few hours at least. It's there at every cold start.

Any ideas?

2> I think unrelated: I get a periodic scraping sound whose frequency is related to bike speed. I'm getting this since adjusting my chain. I dont think the chain's too tight, it has a ~1 inch slack. Also I aligned the grooves on each side of the axle adjustment pieces so they align with the back of the swingarm, as said in the service manual... where could this be from? It doesnt seem to change if I press the brakes, so I doubt if it's from there...

Again... ideas?

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RE: cold start ticking sound, running scraping sound - 4/1/2008 3:45:41 PM

jaynd

Posts: 3309
Joined: 4/12/2007
Status: online

Hmmm, i was getting a ticking sorta sound when my valves needed adj.

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RE: cold start ticking sound, running scraping sound - 4/1/2008 4:24:06 PM

ampfp

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I've done the 16k service at the dealership where they should have checked valve adjustment

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RE: cold start ticking sound, running scraping sound - 4/1/2008 5:01:01 PM

traitorhound

Posts: 267
Joined: 8/17/2005
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Low on oil?

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RE: cold start ticking sound, running scraping sound - 4/1/2008 5:47:10 PM

Fort Collins

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Joined: 3/25/2008
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as for the ticking sound when you first start your bike from cold and it last for about 5 sec. and it varies with rpm that is your oil warming up. when your bike is cold and and oil isn't as runnie as it would be when it's warm it takes a sec. for you oil pump to pick up the oil so your valves chatter aka tap. nothing to worrry about it's normal on the bikes. hope that helps. but don't sweat that noise.

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RE: cold start ticking sound, running scraping sound - 4/1/2008 9:02:27 PM

fishfryer527

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Joined: 12/5/2005
From: Indian Harbor Beach, Florida
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could you be hearing the disc brakes for the scraping sound?

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RE: cold start ticking sound, running scraping sound - 4/1/2008 10:37:12 PM

ampfp

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Joined: 9/11/2006
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Thanks Fort Collins, I never had the noise before so I was wondering... maybe time to change oil... havent been able to check level like traitorhound said.

I'm not sure the scraping is the brakes, since it doesnt change at all when I press or release the brakes. There's brake sound and then the scraping at the same volume as before. If I'd had a tire hugger I'd have suspected that... would the chain scrape something due to pulling back the axle a few mm?

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RE: cold start ticking sound, running scraping sound - 4/2/2008 5:42:17 AM

wishin4600rr

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Joined: 5/10/2007
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If you had the dealership do a 16k service maintanence, is there a possibility that they could have left something in your engine or loose?

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RE: cold start ticking sound, running scraping sound - 4/7/2008 12:22:04 PM

ampfp

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changed oil but the sound is still there :( it's for a much shorter duration (2-3secs) and a little softer, but it's there. Last couple of things I did to the bike was to tighten chain, put an adjustable bolt in the stock CCT and run BK injector cleaner through a couple tanks of gas.
Bike still pulls hard!

< Message edited by ampfp -- 4/7/2008 12:28:21 PM >

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Post #: 9