ZX9 help

[iwannaride]

I have been having trouble with my 2002 zx9. When driving the bike in second gear around 40mph if you try to speed up it starts bucking. I had all the carbs recleaned, replace all fuel/vacuum lines, Fuel filter, fuel pump, fresh gas and new spark plugs. I have been told that it sounds like an electrical problem so i checked all spark and it all seems fine. All the plugs seem to look the same. they are the same shade of brown. I am running out of options and the dealer says that i should change all coil boot and computer. That is around $700-$800. I am in desperate need before i bury the zx9.
thanks for any input

[Zero]

If it only happpens in second gear it sounds like your second gear could be going. Usually the forks get bent and/or the engagement dogs get rounded.

[OreoGaborio]

i subscribe to the theory of:

"Hey Doc, it hurts when I go like *this, what should I Do?"

"Don't go like *this"

... just don't go like that

[Karaya One]

It sounds like second gear is toast. Having owned several early FZR1000's, you get very familiar with what a bad tranny acts like.

Does it do it in third or fourth gear roll-ons?

[iwannaride]

It does it in every gear. No matter what. I took out aall of the jets today and check to make sure they were all intact and ok. I blew out all of carbs and tried setting the air fuel screw at 1.25 turns out, 1.5 turns out and 2 turns out and it still does the same.

[Honclfibr]

Check the ram air intakes. After I crashed my ZX6 I spent 2 months trying to diagnose a similar problem, ripping the whole fuel system apart. Turned out a moth had made a nest in my left ram air tube while the bike had been sitting.

I hate moths.

[iwannaride]

I have completely torn every vacuum, fuel, air and any other type of hose off the bike and throughly cleaned them out. I don't think there is any dirt anywhere.. I am going to blow it up soon
thanks for the info

[Honclfibr]

Originally posted by iwannaride
I am going to blow it up soon

Well now don't do that, even a broken bike's worth something to somebody. Hell I'd buy it if the price was right, I love a challenge

Good luck with it, I'll post up if I can think of anything else, sounds like you've hit the usual suspects tho....

[twrayinma]

Originally posted by Honclfibr
Well now don't do that, even a broken bike's worth something to somebody. Hell I'd buy it if the price was right, I love a challenge

just what you need, another mechanic's project.

here's a challenge for ya, keep track of ALL screws next time you do summat to the bike.

[Honclfibr]

Originally posted by twrayinma
just what you need, another mechanic's project.

here's a challenge for ya, keep track of ALL screws next time you do summat to the bike.

Bite me, gimp

It's not "missing screws", they're "speed holes". Power to weight, you know?

[JeffL]

Originally posted by Honclfibr
Bite me, gimp

It's not "missing screws", they're "speed holes". Power to weight, you know?

When working on automobiles/mechanics, my saying is "If you can put it back together with less pieces than came off it and it doesnt fall apart, you made it more efficient."

[twrayinma]

Originally posted by Honclfibr
Bite me, gimp

It's not "missing screws", they're "speed holes". Power to weight, you know?

i don't wanna be hearing about yer "speed holes," buddy.
sounds like a personal problem. try the free clinic.

[richw]

Possivle bad coils, cap ends or wires.

Friends stumbling Suzuk was

high resistance of resister plug boots.

It takes more voltage for a soark under load

Any back firing ?

[Karaya One]

I would go electrical next if it does it in each gear.

Coils, plug wires, etc.

[Jank]

Did you check the float height?

[iwannaride]

I checked float height. <My bike has the coil and boot as one. They are electronic. I tried one off of a friends zx9 but still nothing. I took a compression reading tonight and I came up with 185psi #1 cyl. 182psi #2 cyl. 185 #3cyl and 190 in #4cyl. all are approx guage is kinda old. Owners manual says 220psi. I check my friends and his was the same as mine.

[BigShel]

Wahts up kid, call me in the morning I have a zx9r king I can set You up with.

thanks Shel
978-851-5005

[iwannaride]

thanks, anything will help.