help needed fuel prob NC30

[cor26]

alright lads,
I need help!! i think i have tried everything i can do so i`ll send it out to you guys... have an NC 30 that i cannot get going right. when im reving, it thinks about it for a second before actually reving, even reving around the 5/6 k mark there is still a slight delay. heres what i have done so far..

cleaned all jets in carbs including the fuel in, under the floats,
air screws removed, housings cleaned,
new vacume hose for cylinder to fuel tank
ultrasonic cleaning of the carbs themselves
tried the bike running of an NC35 fuel tank
took her down the road the other day and she doing her normal thing, delaying slightly in the revs, and then she just started dying, barely limped her home.
Ii put an inline fuel filter on it the other day and when i rev the bejasus out of it and kill it suddenly there is very little fuel in the glass filter?

any opinions appriciated but i really want to hear from someone who has seen these symptoms before.

Thanks a mill in advance.

[Cammo]

Have you done the usual electrical/charging system checks? Check the battery voltage when it's running (idle and 5000 revs). These are a common problem on nc30's and they can show up as all sorts of symptoms!

There's a guide here on what to check, all you need is a multimeter:

http://www.400greybike.com/docs.htm


Also, have you set the carb float heights? They should be 12.5 mm.

[AK76]

Why did you put an inline fuel filter in it? (There's one in the tank itself)
It sounds to me like you may be starving it of fuel (especially if there's very little fuel in the filter after gunning it).

I'd try taking the filter out, and seeing if the problem persists.

[cor26]

I put the fuel filter on to see was there a steady flow of juice after gunning it. does it matter that there is no hose connected to the breather valve on the top of the petrol tank? as far as i can see, that pipe would be just to take away overflow????