98 zx7 question (ignition or gas)

[GiliganZX]

ok you know the bike. it has alot of miles on it. like 43000. it has been running perfect for a long time. then all of a sudden one day it barely started and ran like crap. so i did what most people would do, and give it a tune up. well i started with the plugs, plug wires and checked the coils. so after it still didn't want to start. so i clened the carbs reinstalled stil no start.. so finnaly i change the fuel pump and filter. it starts right up runs really smooth.. now this is where it gets a little wierd. i give barely any throttle the rpms will come up to a max of around 4000... it will not go over 4000... if i even give it 1/4 throttle it will die.... if anyone knows how to fix or has had the same problem let meknow... thanks guys

also mods the bike had is a full akropovic exhaust and has been jetted to accomodate..


Gil

[juan valdez]

I'm not familiar with the zx-7,but I would check to make sure the ram air is connected properly.

[GiliganZX]

the ram air is hooked up correct but i think one of my vacuum line might be shot.. thanks for the response.


Gil

[Jarrod]

sounds like fuel, check your carbs. oh and never "tune up" a bike to fix it, it won't. diagnose the problem, fix it, tune up on regular intervals.

[04zx636r]

if it was a vuccum line it would be noticable at idle and smooth out when you rev it up... sounds like fuel is cutting out or something with the air intake.

[GiliganZX]

ok for anyone who has been reading this thread or anyone with this problem in the future... I found and fixed the problem... It was in the carbs... I pulled the jets out.. The #3 jet was clogged and gunked up... So I cleaned all the jets now it runs like a champ..

[98litesho]

Originally Posted by GiliganZX

ok for anyone who has been reading this thread or anyone with this problem in the future... I found and fixed the problem... It was in the carbs... I pulled the jets out.. The #3 jet was clogged and gunked up... So I cleaned all the jets now it runs like a champ..

so the first time u cleaned the carbs was on the outside ? lol, j/k.. glad to hear you got it straight . ride safe bruh !!!
Q

[kawikidd02]

Mine is doing the same thing. I haven't got to the carbs yet. That's my next stop. I really hope that it is just the carbs.