i recently had a new motor dropped in my bike and it has no top end it will start to bog at around 8k if im lucky 10k i dont know if its the sencendary injectors or if the clutch is slipping i was gonna check the in jectors but my ******* volt tester needs a new fuse fml allso if i burn out and bring the rpms to high it stalls out

 

sounds like a fuel problem

 

^^^ yea thats what im thinkin

 

Is it making any noise? if so it could be the cam chain tensioner... Mine was loose as a crack *****, and louder than hell and did the same ****. Once i snugged her down the bike ran great.

 

nope i know its not the cam chain theres no noise at all just bogs out around 8k sumtimes 10k

 

help me when i turn the bike on i can see the secondaries move but i dont think theres any gas coming out the top injectors wtf is wrong

 

the fuel pump is most likely bad.. seen it many times on the gixxers...

the top injectors wont deliver fuel unless the bike is running... the secondary throttle plate is controlled by a servo motor, that calibrates when you turn the key.

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^^^ i know it wont get gas if its not running and if its the fuel pump is there an easy way to test that

 

easy way to check if its the secondary...unplug it and open the butterflies..if it revs thats ur problem

 

any codes? is it missfiring at high rpm or it just wont go over 8k? are you using the same wiring harness? i like a good puzzle but diagnosing online sucks lol

 

A lot of times with a fuel pump if you rev it slow it'll let it climb okay but if you just nail it open it will hit the wall and start to bog bad.

 

no codes no miss fires it just stopa around 8k wount climb any higher ir i pinn it or if i slowly let it climb no diffrence it runs perfect untill about 8k rpms and yes its the same harness as on the old motor and i got a new pump when i put the new motor in cuz the other **** the bed

 

First off.....

Have you done a tune up on the engine. I am assuming that you bought it used and seeing as you can't pay for a FUSE for your volt meter....... You might have skipped a few things...

I would have to go with fuel delivery or ignition. Are the spark plugs good? correctly gapped? What about fuel line restriction? Is the fuel line kinked? What about a fuel filter? Is there a filter screen on the tank side of the fuel pump?

What was the original problem with the last engine?

 

i just put in new plugs oil change no kinks in the line and the fule pump i have to take apart to get at the filter i was gonna buy a fuse but the hard ware store dident have the right ones and i dident feel like going back to auto zone for the third time today and the old motor i hydro locked it

 

Does that have a tps (Throttle position sensor)?

 

well did it work? my boy had the same problem..turned out the ecu wasnt running the secondarys the way it should..try it! if thats not it then check all the vac lines on the throttle bodies,then the fuel filter if its a new one you shouldve checked that before you put it in

 

will test it in the morning cant now cuz my ****** neihbors will call the cops on me they hate me as it is and yea im pretty shur it has a tps

 

if it was a tps it would stumble when opening the throttle more when the motor is at any rpm. that doesnt sound like the problem. check fuel pressure, plugs, and coils, crank and cam position sensors.

 

check the exhaust valve. turn the key on and off. is the servo motor working? is the valve moving? if not the motor might be bad or the cables may be crossed and when its suppose open its closed and wont allow it to rev. hope that helps

 

i could be wrong but i think some of you guy are thinking a little to hard on this. more then likely its some thing simple