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 Post subject: 1998nM2 engine noise
PostPosted: Sun Feb 14, 2021 10:27 am 
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Joined: Fri Dec 18, 2020 11:05 pm
Posts: 18
Current ride: griso monster M2
My M2 has started making what I can only describe as a noise like a squealing fanbelt it comes and goes at tick over/low revs
got oil pressure and can see the oil returning to the oil tank
plenty of oil in gearbox/primary
starts up fine ticks over lovely then maybe after a minute or so will start squealing then it will go away as suddenly cant tell where its coming from have been round the engine with a screwdriver to my ear cant tell
this is happening in neutral not been brave enough to ride it
Any ideas
I posted this on the FB page and was advised to to check fanbelt tension LOL
TIA Steve


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 Post subject: Re: 1998 M2 engine noise
PostPosted: Sun Feb 14, 2021 11:24 am 
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Joined: Fri Dec 18, 2020 11:05 pm
Posts: 18
Current ride: griso monster M2
Weirder just run it for 10 mins this morning no noise
I am going to go ride it see what happens
Steve


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 Post subject: Re: 1998nM2 engine noise
PostPosted: Sun Feb 14, 2021 3:05 pm 
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Joined: Fri Dec 18, 2020 11:05 pm
Posts: 18
Current ride: griso monster M2
went for ride couple miles no noise
couple hours later went out again after a mile or so its squealing again then it stopped
in gear out of gear, clutch in or out no difference
so its crank or primary related
TIA Steve


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 Post subject: Re: 1998nM2 engine noise
PostPosted: Sun Feb 14, 2021 7:14 pm 
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Joined: Tue May 05, 2009 8:00 pm
Posts: 10159
Current ride: X1 2001
Location: southampton
:askmaz:

is it the primary chain tensioner :?:


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 Post subject: Re: 1998nM2 engine noise
PostPosted: Sun Feb 14, 2021 7:35 pm 
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Nutah wrote:
:askmaz:

is it the primary chain tensioner :?:

The question is for a 98 bike, has the uprated tensioner ever been fitted? If not, it is highly likely to have cracked. Very common issue indeed before the tensioner was significantly strengthened.

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 Post subject: Re: 1998nM2 engine noise
PostPosted: Mon Feb 15, 2021 1:02 pm 
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Joined: Wed Apr 15, 2009 5:25 pm
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Location: Oswestry
Steve is correct with his warning about the tensioner. The only one I've ever seen that wasn't broken in an early bike, was the one I fished out of one of mine lOl . I would imagine there's a possibility of shrapnel finding its way into the gearbox - you really don't want that. Take the primary case off for a peek. Depending on the type of cover gasket you have, you may be able to reuse it.

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 Post subject: Re: 1998nM2 engine noise
PostPosted: Mon Feb 15, 2021 6:51 pm 
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Joined: Fri Dec 18, 2020 11:05 pm
Posts: 18
Current ride: griso monster M2
heres a pic chain was stupid slack been eating the case


You do not have the required permissions to view the files attached to this post.


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 Post subject: Re: 1998nM2 engine noise
PostPosted: Mon Feb 15, 2021 7:54 pm 
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Joined: Wed May 06, 2009 5:10 pm
Posts: 2108
Current ride: 99 Cyclone M2
Location: Liverpool
The oil is red ?, I'd consider replacing it with HD Sport Trans :idea: looks like an upgraded tensioner too :yup:

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 Post subject: Re: 1998nM2 engine noise
PostPosted: Tue Feb 16, 2021 8:09 am 
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Current ride: X1 2001
Location: southampton
if you look close at the picture Gus it's broken on the right hand end
& as Steve said it was so slack , may be why it broke the end off
but lucky he found it before it did more damage :sun:


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 Post subject: Re: 1998nM2 engine noise
PostPosted: Tue Feb 16, 2021 8:11 am 
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Joined: Tue May 05, 2009 8:00 pm
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Current ride: X1 2001
Location: southampton
Nutah wrote:
:askmaz:

is it the primary chain tensioner :?:


do i win a goldfish :mrgreen:


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 Post subject: Re: 1998nM2 engine noise
PostPosted: Tue Feb 16, 2021 8:51 am 
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Joined: Wed May 06, 2009 5:10 pm
Posts: 2108
Current ride: 99 Cyclone M2
Location: Liverpool
Nutah wrote:
if you look close at the picture Gus it's broken on the right hand end
& as Steve said it was so slack , may be why it broke the end off
but lucky he found it before it did more damage :sun:


:oooops:

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 Post subject: Re: 1998nM2 engine noise
PostPosted: Tue Feb 16, 2021 9:12 am 
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Joined: Fri Dec 18, 2020 11:05 pm
Posts: 18
Current ride: griso monster M2
Thanks for all your help guys
hopefully going to find out if the noise has gone today
Steve


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 Post subject: Re: 1998nM2 engine noise
PostPosted: Tue Feb 16, 2021 10:12 am 
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Joined: Tue May 05, 2009 8:00 pm
Posts: 10159
Current ride: X1 2001
Location: southampton
:yup: good luck


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 Post subject: Re: 1998nM2 engine noise
PostPosted: Tue Feb 16, 2021 2:18 pm 
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Joined: Wed May 06, 2009 1:55 pm
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Current ride: K100
Location: Perth WA, occasionally Quorn, UK
Nutah wrote:
Nutah wrote:
:askmaz:

is it the primary chain tensioner :?:


do i win a goldfish :mrgreen:


Yes, Maz will despatch one by post forthwith.

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 Post subject: Re: 1998nM2 engine noise
PostPosted: Tue Feb 16, 2021 2:25 pm 
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Joined: Mon Nov 07, 2011 7:10 pm
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Current ride: Buell ulysses
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Bonzo wrote:
Nutah wrote:
Nutah wrote:
:askmaz:

is it the primary chain tensioner :?:


do i win a goldfish :mrgreen:


Yes, Maz will despatch one by post forthwith.

:hehe:

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