XB12R no torque

[Theycallmecrash]

How did they determine the injector was clogged, my experience is injectors are kinda a rare failure, and you put 2 tanks through it running like crap? That sounds like potential for some major engine hurt. Do these symptoms happen at all engine RPMs and all loads? If not, steer away from the injector. IMO if flogging the thing to wide open at 6700rpm doesnt open the injector up youd have much much worse problems by now. Like a popped engine.
Get a video clip of how its running let us hear and see how its acting.

 

[snrusnak]

yeah injector is a rare part to fail. I honestly believe it's the tuning. The bikes are tuned extremely lean from the factory to pass emissions.

 

[vikefreak]

It just idles like ****. and at low rpms it pops and misses like when its idling.

 

[vikefreak]

The guy I bought it from had said that it had some older gas in it and he had put some stable in it and after 2 tanks or so it should be all good. Well ive put about 9 tanks through it and this is my problem. The bike idles at 1100 RPMs then will drop and raise back up. Occasionally it will even die while idling. It also makes a popping noise coming from the airbox which I believe is a misfire at low RPMs only while taking off. I really need to fix this problem. It is driving me insane. This is what i have done

-Changed spark plugs and have correctly gapped them.

-Cleaned throttle body and checked air filter.

-Ran some SeaFoam through 2 tanks

-Checked battery with load tester. a little weak so I charged it and it still had the problems.

-Reset the TPS a few way. One I turned the bike one and did this
-throttle open for 1 sec
-closed 1 sec
-repeat 2 more times
-turn off then on and wait for engine light to go off and start bike.
- the whole time the kill switch was on run.

I tried this other method where you turn the key on
-kill switch to NOT RUN
-Full throttle and turn kill switch to run
-close for a sec
-then the same as the other reset way.

 

[Theycallmecrash]

The popping in the air box isnt characteristic of a misfire, if anything its a back fire, which is characteristic of running lean. With that said 2 things, more air than the bike can compensate for is entering the engine, or not enough fuel. Things to check for, leaking throttle body gaskets use a propane tank and lightly point it at the throttle body base listen for engine to change note. Potentially a leaky or failty idle air control motor letting air in at closed throttle more than the computer controls, then theres fueling, possible fuel pressure regulator or pump, need a good pressure reading and that may be dfficult to get done if you dont have the specialty equipement to do so. Anyway you go about it a first step to tell if that is the right direction, add the propane directly to the intake snorkle, not a lot just a little hiss, if this improves response and idle then you have some direction.... If you dont have tuner pro RT and a cable yet get it, or ask for someone local to come help you check your firmware, theres a slight possibility you have an xb9 computer running a 12, seen it before. Beyond this or what youve done it would have to be mechanical and that could be bad.

 

[vikefreak]

What exactly will the propane do? and where can I buy a tuner and cable at? Thanks alot for the help!

 

[vikefreak]

 

[vikefreak]

http://www.youtube.com/watch?v=e48aUKx7qyE