GN250 fuel problem

[qazyy123]

Thanks guys. got the por15 kit and now the bike is running sweet.

[qazyy123]

Nevermind. spoke too soon. The problem has just started again today. was told it could be a fuel mixture problem, but would that cause the bike to bog down intermitently? cause i think it would be a constant bogging down if fuel mixture was a problem. Not sure though.

[notme]

Have you still got black powder in the filter?

[qazyy123]

Nope, fuel is coming through cleanly now, was the first thing i checked.

[notme]

So it was either something else as well, or the black gunk is further down the system. It might be time to strip and clean the carbs....follow FJrider and Mom's suggestions and hope that you find gunk in there, flush it out, put it back together and have a sweet running bike!

[TOTO]

I had similar problem with my GN, All I did was to get a fuel filter installed and problem gone

[lone_slayer]

Iam getting the bogging down on my gsxr250 and iam pretty sure its due to an air leak between the carbs and the engine (inlet manifold) on mine they are rubber boots spray some start ya bastard or similar on it around it etc and see if the idle changes. Will hopefully have mine sealed up in the next few days....

[qazyy123]

Iam getting the bogging down on my gsxr250 and iam pretty sure its due to an air leak between the carbs and the engine (inlet manifold) on mine they are rubber boots spray some start ya bastard or similar on it around it etc and see if the idle changes. Will hopefully have mine sealed up in the next few days....

Is your bogging down constant though? or is it happening intermitently?

[lone_slayer]

a bit of both was starting fine but would run like crap for hillstarts etc was worse when warm sprayed some start ya bastard on the manifold and watched the revs change

[qazyy123]

Ok, thanks, sounds pretty similliar to mine. Except mine does rine fine sometimes when its warm, sometimes itl bog down for anything between a few seconds, and 20 minutes, then run perfectly fine for a while again. Have just checked the carb seals and managed to tighten them up a bit, so ill see how it runs tomorrow.

[qazyy123]

Ran sweet as, all the way to tech and back today. Then took it for one last ride this afternoon and its still doing it. have bought an ignition coil off trademe to see if thats the problem too.