99 Busa hesitation

[speedshifter]

I have a problem on my 99 Busa with a bad hesitation below 4500 rpm's. It almost sounds like you are on a 2 step until 4500 and after that it's good the rest of the way. I've checked the plugs, synced the t/bodys, checked the fuel screen, and drained the old gas. Nothing changed it at all. What else do I need to do?

[dadofthree]

Grip it and Rip it

[nitrousjunkie]

Replace the fuelpump.

[twotonevert]

When did the problem start, do you have an alarm or just install one?

[speedshifter]

When did the problem start, do you have an alarm or just install one?

No alarm. It's been sitting for almost a year and just started doing this. It's always jerked a little at lower rpm's with the cams it has but this is much worse. The only change since last year is a Power Commander but I disconnected it and it didn't change.

[GoldenChild]

go buy can of sea foam pour it in fill tank and take long ride see if it cleans up as you ride only way to tell...

[speedshifter]

go buy can of sea foam pour it in fill tank and take long ride see if it cleans up as you ride only way to tell...

I would if it was a street bike, but it only gets about 2 gal. of gas to about 12 passes.

[GoldenChild]

I would if it was a street bike, but it only gets about 2 gal. of gas to about 12 passes.

if race gas was left in it,send injectors out for cleaning and put in new fresh plugs.

[lightwave]

So has my -99 gone in 10 years, there is probably nothing to do, have tried everything

[denon970]

Had the exact same problem on my 99, it was driving me crazy for months. The problem was a twisted and collapsed fuel line just off the tank...