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Carby issue? Plug issue? Fuel issue? Aaarrrggghhh.....Help
Hi all,
Picked my bike up from the shop afer a tank/fuel line/carby clean as she'd been sitting around for a while before I'd bought it and #2 cylinder wasn't working (spit test on extractor). I'm sure that all the shop did was spray some carby cleaner down it's throat while it was running as it got cylinder #2 working again but she was still a bit rough.
On the way home I gave her a bit of a squirt in 6th and found she couldn't go past 8000rpm. She'd cut out and splurt and splutter back to 7500rpm them pick up again to 8000rpm and repeat, up and down, jerking and farting all over the road. She wasn't doing this before I put her into the shop.
At first I thought it was a carby issue and that the shop hadn't cleaned them out fully until I tried it in 2nd gear where it was doing exactly the same thing, but this time cutting out at 9500rpm and dropping back to 9000rpm.
Just this week I noticed when I twisted to full throttle in any gear she'd splurt and splutter immediately, very slowly winding up the rev range. If I cut back a bit on the throttle she'd pick up and accelerate smoothly as you'd expect.
This leads me to believe it may be a fuelling issue when the throttle is fully opened. Too rich? Too lean?
Or a spark plug issue under load?
Someone suggested it could be the K&N filter making it run too lean.
Another suggested it could be crap in the floats, lines or tank that the dodgy bike shop didn't fix when they said they did.
She's also not starting all the best and idling just above 1000rpm, even with lots of trial and error adjustments of the idle screw.
Apart from that she's running really sweet and I'm very very happy with the purchase.
Any help or suggestions would be really appreciated.
Thanks
Rob
Picked my bike up from the shop afer a tank/fuel line/carby clean as she'd been sitting around for a while before I'd bought it and #2 cylinder wasn't working (spit test on extractor). I'm sure that all the shop did was spray some carby cleaner down it's throat while it was running as it got cylinder #2 working again but she was still a bit rough.
On the way home I gave her a bit of a squirt in 6th and found she couldn't go past 8000rpm. She'd cut out and splurt and splutter back to 7500rpm them pick up again to 8000rpm and repeat, up and down, jerking and farting all over the road. She wasn't doing this before I put her into the shop.
At first I thought it was a carby issue and that the shop hadn't cleaned them out fully until I tried it in 2nd gear where it was doing exactly the same thing, but this time cutting out at 9500rpm and dropping back to 9000rpm.
Just this week I noticed when I twisted to full throttle in any gear she'd splurt and splutter immediately, very slowly winding up the rev range. If I cut back a bit on the throttle she'd pick up and accelerate smoothly as you'd expect.
This leads me to believe it may be a fuelling issue when the throttle is fully opened. Too rich? Too lean?
Or a spark plug issue under load?
Someone suggested it could be the K&N filter making it run too lean.
Another suggested it could be crap in the floats, lines or tank that the dodgy bike shop didn't fix when they said they did.
She's also not starting all the best and idling just above 1000rpm, even with lots of trial and error adjustments of the idle screw.
Apart from that she's running really sweet and I'm very very happy with the purchase.
Any help or suggestions would be really appreciated.
Thanks
Rob
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