Slipping for a split second at 6000rpm in third gear only

[jrad]

Hi guys,

Ive got a very frustrating problem with my GN250.
As per the title its slipping for a split second at 6000rpm in third gear only then continues as normal.
Ive brought it to a mechanic and he did a full service and tune up but its still doing it although not as bad as before.
Im bringing it back to him but he is reluctant to have another look because I couldnt find anything wrong with it the first time.
It does it uphills and also on the flat and its driving me nuts and I believe it could be quite dangerous if it happened on a turn or what not.

Anyone every hear of anything like this happening or have it happen to them and was it fixable??
Id appreciate any feedback.....apart from feedback about GN250 being rubbish.
Thanks

[jellywrestler]

Hi guys,

Ive got a very frustrating problem with my GN250.
As per the title its slipping for a split second at 6000rpm in third gear only then continues as normal.
Ive brought it to a mechanic and he did a full service and tune up but its still doing it although not as bad as before.
Im bringing it back to him but he is reluctant to have another look because I couldnt find anything wrong with it the first time.
It does it uphills and also on the flat and its driving me nuts and I believe it could be quite dangerous if it happened on a turn or what not.

Anyone every hear of anything like this happening or have it happen to them and was it fixable??
Id appreciate any feedback.....apart from feedback about GN250 being rubbish.
Thanks
what's slipping, the tyre or the clutch?

[jrad]

what's slipping, the tyre or the clutch?

Not the tyre and according to the mechanic not the clutch either.
Its as though the drive spins without transfering to the wheel.

[swbarnett]

Hi guys,

Ive got a very frustrating problem with my GN250.
As per the title its slipping for a split second at 6000rpm in third gear only then continues as normal.
Ive brought it to a mechanic and he did a full service and tune up but its still doing it although not as bad as before.
Im bringing it back to him but he is reluctant to have another look because I couldnt find anything wrong with it the first time.
It does it uphills and also on the flat and its driving me nuts and I believe it could be quite dangerous if it happened on a turn or what not.

Anyone every hear of anything like this happening or have it happen to them and was it fixable??
Id appreciate any feedback.....apart from feedback about GN250 being rubbish.
Thanks
How many ks are on it? I had one for a while. After about 20,000km from new I'd worn out the clutch plates. What you describe is pretty much how the problem stated to make itself known.

[jrad]

How many ks are on it? I had one for a while. After about 20,000km from new I'd worn out the clutch plates. What you describe is pretty much how the problem stated to make itself known.

Theres 23,000k on it.
I originally feared clutch plates alright but the mechanic assured me that if the clutch was going there would have been a lot less power going to the back wheel and the front wouldnt have lifted up when you accelerated hard.

Did yours slip on every gear at the start or just certain ones to begin with?

[FJRider]

what's slipping, the tyre or the clutch?

It's a GN250 ... :facepalm:

even at 6000 rpm .. :laugh:


Not the tyre and according to the mechanic not the clutch either.
Its as though the drive spins without transfering to the wheel.


I'm guessing it's NOT a badly adjusted headlight that's the cause ... stop using Car oil to top up the oil level ...

Clutch springs or plates (or both) is my guess.


BUT ...

It COULD be the chain jumping a cog ... ??? check chain tension / condition ...

[swbarnett]

Theres 23,000k on it.
I originally feared clutch plates alright but the mechanic assured me that if the clutch was going there would have been a lot less power going to the back wheel and the front wouldnt have lifted up when you accelerated hard.

Did yours slip on every gear at the start or just certain ones to begin with?
Mine did it in every gear and before I got the plates replaced it was quite bad. If yours has the same problem it will get worse as the plates wear more. Then it will be more easily detectable.

[AllanB]

Sounds like clutch. Keep riding and it will get worse and confirm the clutch is done.

Or the chain - farking GN owners neglect their chains something awful from what I see rattling along.

[skinman]

sounds like clutch, plates may still be ok but springs may be weak which the mechanic will not be able to check. Probably be relativily cheap to replace clutch on one of them. surprised it isnt happening in higher gears as well but if it is the clutch it will eventually, maybe not enough power

[Akzle]

the front wouldnt have lifted up when you accelerated hard.


a gn! Funny guy!

Chain, oil, clutch. In that order.

[jrad]

Thanks guys, sounds like i should just keep riding it until the clutch craps out.
Appreciate the comments and advice

[ducatilover]

Adjust the clutch first...

[FJRider]

Thanks guys, sounds like i should just keep riding it until the clutch craps out.
Appreciate the comments and advice

Good idea .. just don't go far from home (civilization) until it does.

The recovery costs may exceed the bike's worth ..

[Big Dog]

Simplest check, is your clutch cable properly adjusted?

My wife's old gn had a similar issue. Turned out that very occasionally the cable would not fully return making the bike prone to slips near the redline in top two gears only. Right about where peak torque is? Usually only if clutching the shift.

Fix was to correctly adjust the cable, degrease and grease the cable. For us that meant bending the adjuster at the clutch end into the proper alignment. Bent from a previous lie down. That 5 degrees meant the clutch lever went all the way home.

If that is sell operational. My money is on clutch plates worn or contaminated with car oil.

For the price difference get a kit not just the plates. Go aftermarket if you can. It should: Cost you less for a better quality kit than for genuine plates.


Stupid phone / Tapatalk, apologies in advance.

[ducatilover]

Good idea .. just don't go far from home (civilization) until it does.

The recovery costs may exceed the bike's worth ..

Sometimes you do not give very good advice at all.

[FJRider]

Sometimes you do not give very good advice at all.

Sometimes ... you're right ... :apint:

[ducatilover]

Sometimes ... you're right ... :apint:

Like fuck :brick:

[nzspokes]

GNs are not rubbish. A lot start out on them.

Does sound like clutch slip. So if you ask nicely see if any member local to you can take it for a ride to confirm. Then ask said member if he will help you change the clutch. Not a big or long job. Last clutch I did was a 1 beer job. So about 40 mins, not a fast drinker.

From memory the plates for that bike (not a GN) were $70.

[nodrog]

Your dogs are worn on third gear.

[ducatilover]

I think I still have a spare clutch, will check when I am at my other garage in a week or so.

[AllanB]

I think I still have a spare clutch, will check when I am at my other garage in a week or so.

Ow man two garages .........:clap:

[jrad]

Simplest check, is your clutch cable properly adjusted?

My wife's old gn had a similar issue. Turned out that very occasionally the cable would not fully return making the bike prone to slips near the redline in top two gears only. Right about where peak torque is? Usually only if clutching the shift.

Fix was to correctly adjust the cable, degrease and grease the cable. For us that meant bending the adjuster at the clutch end into the proper alignment. Bent from a previous lie down. That 5 degrees meant the clutch lever went all the way home.

If that is sell operational. My money is on clutch plates worn or contaminated with car oil.

For the price difference get a kit not just the plates. Go aftermarket if you can. It should: Cost you less for a better quality kit than for genuine plates.




You know it has been dropped by the previous owner onto the left hand side. You could be on to something.


GNs are not rubbish. A lot start out on them.

Does sound like clutch slip. So if you ask nicely see if any member local to you can take it for a ride to confirm. Then ask said member if he will help you change the clutch. Not a big or long job. Last clutch I did was a 1 beer job. So about 40 mins, not a fast drinker.

From memory the plates for that bike (not a GN) were $70.

That would be ideal. I'm in CHCH, I took it out to the road to Akaroa to try pinpoint where it skips but as someone who is new to bikes I can only tell the problem but not whats causing it.



Your dogs are worn on third gear.

What are the dogs?


I think I still have a spare clutch, will check when I am at my other garage in a week or so.

That would be great, please let me know.

[jellywrestler]

What are the dogs?



try googling it, that way you'll learn a few things that may be important one day.

[Ribit]

Your dogs are worn on third gear.

I'd agree with that one.
Jrad: Look up motorcycle gearbox on google...

[jrad]

Yes, googled it.
Sounds very plausible

[swbarnett]

Or the chain - farking GN owners neglect their chains something awful from what I see rattling along.
Especially with the crap chain they come with.

[jrad]

Brought it in to Suzuki and they've opened it up.
Worn gears and worn shifter is the order of the day.

[Ribit]

Nodrog called it! Now go and stand under the tail of your nearest cow and wait to receive your prize of a pat on the head.

[nodrog]

Nodrog called it! Now go and stand under the tail of your nearest cow and wait to receive your prize of a pat on the head.

It was pretty easy, the clutch couldn't give a shit what gear it was in, and it would certainly slip for more than "a split second at 6000rpm".

Plus I've fucked a few gearboxes.

[swarfie]

Plus I've fucked a few gearboxes.

That's cause you're a ruff cunt!!!

[nodrog]

That's cause you're a ruff cunt!!!

well you are half right, just choose a half.

[swarfie]

well you are half right, just choose a half.

Sometimes one half is usefull....which you are not :killingme

[jrad]

Holy shit!!
I just got a call and they wanted $2k+ to fix or $400 just for the work theyve done so far.
What the hell do I do??

[flashg]

I missed what year your bike is. I have a 83 model motor in the shed (made in japan) top end buggered, but gearbox sweet. If the same as yours you can have it (free) I'm in chch just swap the good bits

[jrad]

I missed what year your bike is. I have a 83 model motor in the shed (made in japan) top end buggered, but gearbox sweet. If the same as yours you can have it (free) I'm in chch just swap the good bits

Thanks mate, thats really good of you but Im afraid mines a 06 and I have no doubt that there will be some reason it doesnt match.
A very kind offer though.

[flashg]

Yes i think yours made in china and not exactly the same. My son got another motor from wreakers. Might be a lot cheaper option

[Mom]

what's slipping, the tyre or the clutch?

That's naughty! Very funny, but naughty all the same...

I am not going with clutch or anything else. I will say it is fuel related. Probably needs a good thrashing.

[Akzle]

What the hell do I do??

put your big boy undies on, pay the good men, presumably they'll return it to you in one piece.