Cam chain problems - rattling. - Page 2 - SV650.org

18-04-12, 08:20 PM

my partner has checked the valve clearances on it tonight and they are in tolerance so thats not the problem either.
:S

muzikill · 19-04-12, 11:50 AM

Whilst doing that job you could have checked the chain for looseness, lubrication & peeped down the head with a torch to check for anything that may have been untoward.

19-04-12, 03:47 PM

yeh he did that while there and everything seemed OK going to take it to get a second opinion the weekend I think

19-04-12, 07:11 PM

I have recorded a video so you can see what I mean about the noise.
http://s1040.photobucket.com/albums/...t=SDC10586.mp4

Bibio · 19-04-12, 08:23 PM

to me that sounds like a loose baffle/something loose in the exhaust. i don't think its anything engine related.

garynortheast · 19-04-12, 08:34 PM

I was thinking it sounded a bit like the fuel tank vibrating against the frame.

flymo · 19-04-12, 08:37 PM

mm, hard to tell. The fact it happens at specific revs could indicate something resonating, when you are next to it do you get any indication roughly where the noise might be coming from?

Another technique to try would be to hold a long screwdriver, your hand cupped around the handle and then your hand to your ear. Place the other end at various parts of the bike and you should be able to hear the noise more accurately, works a bit like a stethoscope.

flymo · 19-04-12, 08:48 PM

it does sound directly mechanical to me, directly related to revs. If you've elliminated cam chain tensioners and valves are gapped properly, and its doing this while in neutral. Assuming the noise is indeed from the engine I would be suspecting something in the gearbox or clutch area. Its possible there is a big-end bearing about to die but I would have suspected that to give you noise throughout the rev range.

It may well not be engine at all as has been commented, impossible for us to tell without hearing it in person really.

19-04-12, 09:46 PM

the problem is solved and it is nothing bad, just annoying we didn't realise sooner.
a friend came round to have look fresh eyes on it, we looked for loose bolts, lost bolts etc and suggested that my engine bars where vibrating against my engine casing. Removed the engine bars and everything is perfect!
amazing what you miss when you instantly think its something bad

Thankyou very much all the help it is really appreciated and sorry for wasting your time.

Bibio · 19-04-12, 09:48 PM

yey. sorted.

your not wasting our time, we are here to help.

18-04-12, 08:20 PM	#11
svkath Guest Posts: n/a	Re: Cam chain problems - rattling. my partner has checked the valve clearances on it tonight and they are in tolerance so thats not the problem either. :S

19-04-12, 11:50 AM	#12
muzikill Member Mega Poster Join Date: Jul 2005 Location: Dunfermline Posts: 1,712	Re: Cam chain problems - rattling. Whilst doing that job you could have checked the chain for looseness, lubrication & peeped down the head with a torch to check for anything that may have been untoward. __________________ Learn to maintain your bike, take it apart, rebuild the engine & more (using better bolts ), drop it & fix it again! K3 Job c.v: Engine:remove/split/rebuild/refit. Replace:Gearbox,Fuel pump,Gaskets. Piston clean,rings. Overhaul:Throttle body,Injectors,Brakes,Forks. Remove/refit:Exhaust,Radiator,Oil cooler,Throttle,Air filter,Tank. Replace: Oil,Coolant,grease,brake hoses & bleed.

19-04-12, 03:47 PM	#13
svkath Guest Posts: n/a	Re: Cam chain problems - rattling. yeh he did that while there and everything seemed OK going to take it to get a second opinion the weekend I think

19-04-12, 07:11 PM	#14
svkath Guest Posts: n/a	Re: Cam chain problems - rattling. I have recorded a video so you can see what I mean about the noise. http://s1040.photobucket.com/albums/...t=SDC10586.mp4

19-04-12, 08:23 PM	#15
Bibio Member Mega Poster Join Date: Jul 2008 Location: here as devil's advocate Posts: 11,568	Re: Cam chain problems - rattling. to me that sounds like a loose baffle/something loose in the exhaust. i don't think its anything engine related.

19-04-12, 08:34 PM	#16
garynortheast Member Mega Poster Join Date: Mar 2010 Location: Mid Wales Posts: 2,689	Re: Cam chain problems - rattling. I was thinking it sounded a bit like the fuel tank vibrating against the frame.

19-04-12, 08:37 PM	#17
flymo Member Mega Poster Join Date: Jan 2008 Location: North West Posts: 3,124	Re: Cam chain problems - rattling. mm, hard to tell. The fact it happens at specific revs could indicate something resonating, when you are next to it do you get any indication roughly where the noise might be coming from? Another technique to try would be to hold a long screwdriver, your hand cupped around the handle and then your hand to your ear. Place the other end at various parts of the bike and you should be able to hear the noise more accurately, works a bit like a stethoscope.

19-04-12, 08:48 PM	#18
flymo Member Mega Poster Join Date: Jan 2008 Location: North West Posts: 3,124	Re: Cam chain problems - rattling. it does sound directly mechanical to me, directly related to revs. If you've elliminated cam chain tensioners and valves are gapped properly, and its doing this while in neutral. Assuming the noise is indeed from the engine I would be suspecting something in the gearbox or clutch area. Its possible there is a big-end bearing about to die but I would have suspected that to give you noise throughout the rev range. It may well not be engine at all as has been commented, impossible for us to tell without hearing it in person really.

19-04-12, 09:46 PM	#19
svkath Guest Posts: n/a	Re: Cam chain problems - rattling. the problem is solved and it is nothing bad, just annoying we didn't realise sooner. a friend came round to have look fresh eyes on it, we looked for loose bolts, lost bolts etc and suggested that my engine bars where vibrating against my engine casing. Removed the engine bars and everything is perfect! amazing what you miss when you instantly think its something bad Thankyou very much all the help it is really appreciated and sorry for wasting your time.

19-04-12, 09:48 PM	#20
Bibio Member Mega Poster Join Date: Jul 2008 Location: here as devil's advocate Posts: 11,568	Re: Cam chain problems - rattling. yey. sorted. your not wasting our time, we are here to help.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Problems aligning rear wheel after adjusting chain tension	aznxk3vi17	SV Talk, Tuning & Tweaking	24	05-06-09 10:51 PM
New chain problems.	jimmy-james	SV Talk, Tuning & Tweaking	31	04-06-08 11:24 PM
rattling on pull off	emcf	Bikes - Talk & Issues	5	02-06-07 10:45 PM
rattling noise	paulthewitt	SV Talk, Tuning & Tweaking	22	17-04-06 02:26 PM