Squeal/squeak coming from engine
 

Hi all, had a search around and couldn't find anything, sorry to post ANOTHER thread!

Having a little trouble with my xt's motor, basically it squeals/squeaks when 'pulling' in low speed, i.e setting off in first & low speed acceleration in 2nd (15-25mph-ish).

The best way I can describe it is akin to the sound of a squeaky fan belt on a car (a sound most people will be familiar with). I'm not very mechanically minded so wouldn't know the first place to start looking. Do these bikes have a belt of sort that could cause this noise? Any help would be much appreciated.

Thanks.

EDIT:
Got a video:

https://youtu.be/Q-gf9wjUqKY

Dose it make the nose in neutral with the clutch pulled with the engine running.?

Nope, nothing.
The engine does make a 'chirp' noise if i rev it, the squeal seems to be an extended version of this.

Got a little video if it helps at all, will try to get one of the bike pulling away although it would be tricky to film haha.

The chirping sound can be heard 17 seconds onward in the video.

https://www.youtube.com/watch?v=jsknYyJ7j3k

Sounds like the early noise of a loose primary drive nut on and off the power and withwhen the slack is taken up in the transmission check this play list of noise and fix ... this noise is in the later more clunky stagesXt660 primary drive nut: http://www.youtube.com/playlist?list...s3MyCuVkSQuKKP

@bikemad

I managed to get a little video of the bike setting off, you can hear the chrip/squeaking noise quite clearly.

https://youtu.be/Q-gf9wjUqKY

Does that sound familiar to when you had the loose crank nut?

Thanks a lot.

Yup sounds like it to me

Looks like a trip to a mechanic for me then, don't have the tools, skills or a garage to work in..damn :(

Basic allen sockets . Normal sockets oil water and a couple of hours .... oh and a torque wrench .... anywhere near hull?

A good set of tools is on my to buy list, I've got a basic socket set and a torque wrench though.
I'm actually in Hull my self yeah.

If u get stuck I can guide u

That would be much appreciated thanks.
I'l have to leave it for the time being until I can get access to some space to do the job as I would be working in the street. :/

I've done mine in the back garden both times ...... don't keep driving with it for long as I know someone who snapped there key and it cost them �1300 to get sorted

Just had a pm asking for an update for this so here goeHi. The noise he was experiencing was a normal noise the bike makes when they put there very first bit of power out under load ...... we compared his and mine going up a curb and they both sounded the same . The noise was just a characteristic of the bike ....... but the noise made by the crank nut on these is more of a clunk ...... like someone hitting a vice with a hammer .... hope this helps ...... u can also find videos on youtube of the knock noise itself ......... as for tightening the nut up u need to take the foot rest. Clutch cover . And water pump off to remove the side casing once removed all you have to do is un tighten the lock washer and then torque the nut back upto 120nm ..... one first did it at 10.500 mikes then again at 22.500 and then for some reasson it did it 500 miles after that ... I think the nuts getting tired so I have a new oe here ready to swap it as and when it does it again ... hope this helpss

Check exhaust for blow in welds or that air valve crap.:icon_burnout[1]:

Sorry for the lack of update for those following!

As bikemad said, the noise seems to be somewhat normal and doesn't seem to be damaging to the engine. It's yet to develop into anything serious, just seems to be an annoying noise.

@Mort,
I'll be buying new MTC cans soon so will be having a good look over the pipes.

It could also way of valve clearence, might also be the autodecompressor on the cam that makes the noise.

Hi josh. Bit off topic but what engine bars do you have on? I have a belly pan on and wasn't sure if I could get some on but see you have both on yours


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