Author Topic: Clanking noise (Read 5337 times)

Shappaeye · « **on:** 28 July 2016, 04:55:12 pm »

I aint a mechanic, as you are about to find out.

When my bike is idling, I can hear a clear clanking noise but as soon as it goes into gear before I pull off you can't hear it anymore.

Any ideas?

mickvp · « **Reply #1 on:** 28 July 2016, 04:58:45 pm »

Does it go away in neutral with the clutch pulled in? Would you call it a "rattle"? Sounds like it could be a bit of clutch rattle to me?

darrsi · « **Reply #2 on:** 28 July 2016, 07:45:26 pm »

May i suggest possibly filming it with your phone and letting us have a listen.

Clanking is another word i'm not too familiar with so can't make a genuine judgement.

Shappaeye · « **Reply #3 on:** 28 July 2016, 07:56:46 pm »

Thanks guys, will do, clanking does sound a little severe.

I'll be back...

Shappaeye · « **Reply #4 on:** 28 July 2016, 08:04:58 pm »

Ok, here it is and yes it does stop when the clutch is in as you may be able to hear.

mickvp · « **Reply #5 on:** 28 July 2016, 08:18:13 pm »

I can't get the video to play on my phone (iPhones are funny that way your video is not the issue) but just going by the fact you have said it goes away with the clutch pulled in I would be led to think it is just clutch rattle. Balancing the carbs and making sure the clutch biting point is set correctly can quieten it down if it's overly intrusive, but all the fazers do it to one degree or another and as I say as long as it's not too bad I wouldn't worry about it.

I should caveat this by saying it could be something else and someone who can actually hear it on the video may be able to offer a bit of more informed guidance

Shappaeye · « **Reply #6 on:** 28 July 2016, 08:22:33 pm »

There is no video, it's an audio recording

Ok, that sounds fair, thanks.

fazersharp · « **Reply #7 on:** 28 July 2016, 08:29:00 pm »

You need a pc not crapapple
windows media player I heard it but aint no mechanic either im afraid.
It sounds like a sherman tank
Def can hear (or rather not) when the clutch ins pulled in

darrsi · « **Reply #8 on:** 28 July 2016, 08:48:53 pm »

Fecking hell, i'd say that sounds more like a combine harvester although i can see why you used the word clanking!!!
Put it this way, if it were human i'd be calling it an ambulance.
That does not sound good at all.

mickvp · « **Reply #9 on:** 28 July 2016, 09:47:09 pm »

Oh aye, just listened to it there. That's not sounding great. A bit more than clutch rattle I would say

misterjayb1 · « **Reply #10 on:** 28 July 2016, 10:01:41 pm »

If that clanking is ever followed by a loud bang then silence I would say its serious... Bizarre how it stops with revs..

JoeRock · « **Reply #11 on:** 28 July 2016, 10:08:09 pm »

THink I know the problem

Someone's put an old coal burning steam train in your bike!

Bretty · « **Reply #12 on:** 29 July 2016, 07:37:47 am »

Walk around the bike.. where does the noise sound like it is coming from? Top end, bottom end, left or right?

It could just be one of your exhaust manifolds leaking, which can make an engine sound pretty rough. Or doe the noise come from the right hand side of the engine (clutch assembly)?

Get the bike on the centre stand and determine if the noise changes in both neutral and first and with the clutch in or out in both cases...

Ultimately, we could help you diagnose the fault, but if you're not a confident mechanic, you'll be getting a garage to fix it anyway. Take it to a garage and a friendly mechanical will give you a rough diagnosis within about 5 minutes.

Shappaeye · « **Reply #13 on:** 29 July 2016, 09:27:36 am »

Thanks all, I will take it to the garage.

darrsi · « **Reply #14 on:** 29 July 2016, 09:34:17 am »

It does sound like the revs are up, but out of curiosity what RPM is the needle sitting at on tickover?

BBROWN1664 · « **Reply #15 on:** 29 July 2016, 10:30:46 am »

That just sounds like it is idling far too low and struggling to keep running. Adjust the idle speed to around 1400rpm and see how that goes.

Fazerider · « **Reply #16 on:** 29 July 2016, 10:35:38 am »

Quote from: BBROWN1664 on 29 July 2016, 10:30:46 am

That just sounds like it is idling far too low and struggling to keep running. Adjust the idle speed to around 1400rpm and see how that goes.

Agreed.
It doesn't sound terminal to me, I'm pretty sure that's just a combination of the revs being too low (925 rpm) and the carbs need balancing.

darrsi · « **Reply #17 on:** 29 July 2016, 10:39:15 am »

Quote from: Fazerider on 29 July 2016, 10:35:38 am

Quote from: BBROWN1664 on 29 July 2016, 10:30:46 am
That just sounds like it is idling far too low and struggling to keep running. Adjust the idle speed to around 1400rpm and see how that goes.
Agreed.
It doesn't sound terminal to me, I'm pretty sure that's just a combination of the revs being too low (925 rpm) and the carbs need balancing.

I'll go for 960rpm

BBROWN1664 · « **Reply #18 on:** 29 July 2016, 10:47:49 am »

probably closer to 840rpm

For the benefit of Shappaeye, you adjust the idle speed using the black thumb screw on the left hand side of the bike (by the carbs)

Fazerider · « **Reply #19 on:** 29 July 2016, 10:49:57 am »

Quote from: darrsi on 29 July 2016, 10:39:15 am

Quote from: Fazerider on 29 July 2016, 10:35:38 am
Quote from: BBROWN1664 on 29 July 2016, 10:30:46 am
That just sounds like it is idling far too low and struggling to keep running. Adjust the idle speed to around 1400rpm and see how that goes.
Agreed.
It doesn't sound terminal to me, I'm pretty sure that's just a combination of the revs being too low (925 rpm) and the carbs need balancing.
I'll go for 960rpm

OK, it depends where you measure as it's running so unevenly.

darrsi · « **Reply #20 on:** 29 July 2016, 11:37:02 am »

I reckon it'll be more than just the one thing responsible though, it needs a good going over either way, because even with throttle applied it still sounded rough in running.
Once it's sorted it'll be like riding a new bike.

Fazerider · « **Reply #21 on:** 29 July 2016, 01:45:07 pm »

Thinking about it, it might be that the loud cylinder is pinking.
Take a look at the plugs, there may be one that looks as if it's running lean.
Either way, it's probably worth checking the adjustment on the slow-running mixture screws.

BBROWN1664 · « **Reply #22 on:** 29 July 2016, 02:14:40 pm »

start with the simple things. adjust the idle speed to the right figure and then if something is still not right dig deeper.

tommyardin · « **Reply #23 on:** 29 July 2016, 02:16:28 pm »

Sounds just like a rattly old Fazer 600 FZS clutch to me, mine has a rattle that almost disappears when the clutch lever in pulling in.
I spoke to my mechanic about it and was told its absolutely fine they nearly all have a rattle/knocking noise.
He (Darron) my mechanic had previously replaced the basket on his FZS Boxeye along with the centre hub, plain and friction plates and all associated springs and screws to no avail as the clutch still had a rattle albeit a little less than before, but, 18 months down the line it was rattling at the same volume as it was before the very expensive replacement.

I have had my 2003 Foxeye for over three years now and the rattle has not changed in all that time, I have done about 9K in that time.
Bike now has 34.5K miles on the clock.

I found the cheapest way to stop it is a pair of soft foam earplugs, it also has the bonus of reduced wind noise.

I think it's possible that the recording has amplified the sound (Recorder right up against the engine) and at what volume is it playing at also? exaggerates the whole thing. mine sounds exactly the same but at much lower volume.
Bit like a stethoscope up against your chest so the doctor can hear your breathing.

My personal opinion is that is still clutch rattle/clatter.

Shappaeye · « **Reply #24 on:** 29 July 2016, 04:33:32 pm »

Thank you all! Excellent constructive feedback unfortunately my local bike guy, who was very good, aint around anymore.

I shall look into it though and start simple.