NSR running issue

Livefast123 · Nearly there... Joined: 14 Mar 2010 Karma :

Just done a top end rebuild on my NSR and it was running great, completed running in period and got good compression etc. It also had a new thermostat and tank (SH) as the old one had rotted through

Yesterday I decided to use it for work so started it up and when I tried to ride away it would just bog so chucked it back in the garage and took the Comet.

Took it for a ride out today and it behaved for around 2 miles then I was doing around 50 when it started chugging like it was running out of petrol. I put more throttle on and it just died. It wouldn't restart without the choke on and if I took it off it would die. I stayed there for around 2 minuted blipping the throttle, put the choke off and it was fine. Travelled another 2 miles down the road and the same happened Evil or Very Mad

Choke on again and start up. I then left the choke on and the bike drove fine and didn't cut out Neutral

Carb was cleaned when i rebuilt it, plug is a fairly new iridium, jetting is standard derestricted jets and ok, air filter clean, 2 x newish inline filters fitted.

I did consider a fuel tank vacuum but it running on choke should surely discount this?
____________________
Current ride - Yamaha MT-07

N cee thirty · Banned Joined: 31 Jan 2010 Karma :

maybe the inline filters not letting as much fuel through,so theres not much in the float bowl making the bike run lean,so the choke on compensates for it

could be anyway ;D
____________________
'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

chris-red · Have you considered a TDM? Joined: 21 Sep 2005 Karma :

When this happens open up the petrol cap and see if you here a noise like air rushing in, you could have a blocked breather.
____________________
Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
Skudd:- Perhaps she just thinks you are a window licker and is being nice just in case she becomes another Jill Dando.
WANTED:- Fujinon (Fuji) M42 (Screw on) lenses, let me know if you have anything.

Livefast123 · Nearly there... Joined: 14 Mar 2010 Karma :

Thats what i thought Chris but would the fact that it'll run till the cows come home on choke discount that?

I wouldn't normally have 2 filters but I cut the new fuel line too short Embarassed

____________________
Current ride - Yamaha MT-07

truslack · World Chat Champion Joined: 08 Apr 2007 Karma :

I've never had any luck with inline fuel filters, always seems to cause that issue so it's probably worth replacing with a decent size fuel line.
____________________
Current: Suzuki RG 125 Gamma, Honda H100, Triumph Tiger 800XC, Suzuki SV650 (minitwin)

Livefast123 · Nearly there... Joined: 14 Mar 2010 Karma :

Thanks, I'll remove them and try to reroute the fuel line and see if that makes any difference.
____________________
Current ride - Yamaha MT-07