1
« Last post by darrsi on Today at 07:21:53 am »
Definitely more of a knock or clatter than a rattle.
Sounds like its coming from the front sprocket cover.
When you touch that area, you can feel the knock.
Does it in drive and when stationary.
I was gonna say check the sprocket, sprocket nut and chain, for wear. May even just be the rear wheel alignment out too?
But when you mention "stationary" do you mean completely still, or with the bike on the centre stand, bike in gear and the rear wheel moving?
Stationary as in bike not moving, bike in neutral.
If it does it in stationary mode then your best bet is to video the sound and let us hear it, for a quicker solution.
2
« Last post by darrsi on Today at 07:19:15 am »
What is your idle speed set to?
Idle speed set to 1500rpm. Once the engine is hot it tends to idle at around 1800rpm
idle speed once warm shoulf be about 1250
What are the consequences of this to a carb'd engine? Running rich?
These particular bikes do run rich as standard anyway. How long have you had the bike? (whatever it is, you need to put the year and model under your name to give us more info) And do you know the history of the bike, in this example when was the air filter last changed? Changing to a K&N air filter can balance the fuel mixture a bit better by helping the engine breathe more.
3
« Last post by Lemongrab on 21 May 2024, 06:34:53 pm »
Definitely more of a knock or clatter than a rattle.
Sounds like its coming from the front sprocket cover.
When you touch that area, you can feel the knock.
Does it in drive and when stationary.
I was gonna say check the sprocket, sprocket nut and chain, for wear. May even just be the rear wheel alignment out too?
But when you mention "stationary" do you mean completely still, or with the bike on the centre stand, bike in gear and the rear wheel moving?
Stationary as in bike not moving, bike in neutral.
4
« Last post by Lemongrab on 21 May 2024, 06:34:05 pm »
What is your idle speed set to?
Idle speed set to 1500rpm. Once the engine is hot it tends to idle at around 1800rpm
idle speed once warm shoulf be about 1250
What are the consequences of this to a carb'd engine? Running rich?
5
« Last post by spider on 21 May 2024, 06:09:55 pm »
I bought some hammerite paint for the rusty bits to brush on bike plus the engine fins and the bit above gear lever that sez Yamaha hopefully it will tidy it up or would powder coating on that part be better for it . I got smooth black
6
« Last post by spider on 21 May 2024, 05:38:24 pm »
I hope you’re okay mate as the conversation has gone dead
7
« Last post by darrsi on 21 May 2024, 06:09:39 am »
Definitely more of a knock or clatter than a rattle.
Sounds like its coming from the front sprocket cover.
When you touch that area, you can feel the knock.
Does it in drive and when stationary.
I was gonna say check the sprocket, sprocket nut and chain, for wear. May even just be the rear wheel alignment out too? But when you mention "stationary" do you mean completely still, or with the bike on the centre stand, bike in gear and the rear wheel moving?
8
« Last post by BBROWN1664 on 20 May 2024, 08:38:55 pm »
What is your idle speed set to?
Idle speed set to 1500rpm. Once the engine is hot it tends to idle at around 1800rpm
idle speed once warm shoulf be about 1250
9
« Last post by chaz46 on 20 May 2024, 08:33:29 pm »
ok, managed to get out on the thou today. 2002 FZS
main road and country lane short trip, Im not sure of the problem, or not..
went ok on the main road, got over the limit on a straight (the roads around here are pathetic),
turning on to the country lanes to my unit the ride seemed jerky.
fuel system problem? could just me being bounced and jerking the throttle.
gearing? cant go too fast as you get bounced off the seat.
or suspension?
so, its not been ridden for a few years, the carbs have been stripped and cleaned, the filter replaced, new fuel, pump cleaned and working.
only been run up on the ramp a few times. Im not sure if as the road is very lumpy, I was getting bumped around and moving throttle or the wheel getting jerked about.
what sort of speeds to gear am I looking at, 40mph speed limit3rd or 4th gear.
or maybe soft suspension?
thoughts?
10
« Last post by b1k3rdude on 20 May 2024, 06:20:14 pm »
ta.
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