i have a 98 f3
i just got a new fuel pump last one was shot
fuel filter works good no blockage
fuel flow is good
it seemes to be that the plugs are getting fowled when ever i try to start it
gas spools up in the exaust and back fires
and the plugs are new
i think it might have somethin to do with the carbs
your thoughts would be appreciated
whats going on
thanks .

 

Saw you post in General tech so I will cut & paste it here:

(What condition is the battery in? make sure its at peak charge. Just a thought also, but you don't have the kill switch on do you? On my bike, starting from a cold motor, full choke, petrol turned off & I don't touch the throttle. If the motor's flooded, then turning the petrol on isn't going to help.
When you try to start a flooded motor, you hold the throttle open & keep it there, you don't pump the throttle. They can be sensitive buggers to start & I have seen a lot of people (not just on CBR's) put the keys in the ignition, twist the throttle a couple of times & then hit the starter, Ok if the bike is a 66 model Norton, but on modern bikes with carb's it often floods the motor (& on fuel injected bikes a waste of time)

Have you done anything to the carb's that would cause it to flood?

 

havent played with the carbs at all
and before we did have it started before it needed a new fuel pump it did run rough but i think that was just due to the lack of fuel reaching the plugs

 

the battery is always fresh charge the switch is at run
and it doesn't start flooded

i have the choke open and i dont throttle it at all so beats me