faceless

on f4i losing power when riding and shutting off when you jump on the seat or just move the tank a 1/8 of an inch.

any ideas???????? also will power up and start if the tank is touching the frame or subframe. im lost any ideas?


JNutz you know which bike im talking about. HELP!!!!!!!!!

$$$$DINO$$$$

Check if the wires that connect to the battery are tight and not touching the subframe in any way...

mofat01

u got a short or lose wire somewhere..start tracing them out

faceless

checked its all tight n not touching. i thought i might be the ground to the motor itself but its tight and clear too.

str8edge24

its got to be in the harness some where just chase each wire out or get a new harness of ebay

$$$$DINO$$$$

if its not that..i would pull the tank off and turn the key,and touch the wires around the tank,keep an eye to see when u loose power,when you do thats where u have the problem take a good look at all the wires u were touching..wires are not a big problem..

$$$$DINO$$$$

that would be the hardest way of fixing this problem..i would never do that just because a wire is messed up..

faceless

with the tank sitting on the bike its fine but once you lift it off the frame it dies.. any ideas???

$$$$DINO$$$$

to add u can also make sure the wires that connect to the batter are clean..also do your f4i have tip over sensor?is it removed? proby not the problem but worth the try..

faceless

the terminals are clean. tip sensor and every sensor is double checked. might be fuel pump. if not it then i guess harness.

$$$$DINO$$$$

so just keep it on the frame like it should be...i kinda out of ideas,i never looked at a f4i tank

$$$$DINO$$$$

well still,like i said turn the key and move the wires around and see if u get power..

Ethiopian

it weird i was driving down the road and the bike just starts cutting out and dieing, then i tear everything down to find nothing loose or bare wire. turn the key and have power with the tank nowhere near my bike. plug the fuelpump and mount the tank bike fires up fine.


heres what got me, if i touch the tank to the frame it sparks an if the tank isnt touching the frame the bike dies no power anywhere. tomorrow im gonna swap the fuel pump and if it doesnt work im gonna swap the entire harness. if it still does it im gonna finance a 636.

$$$$DINO$$$$

sometimes wires can melt,inside the black covering of the wire harness,then they just melt together and connect...happened to me..i dont belive changing the fuel pump will solve anything..

jcarr242

I agree with Dino, that doesn't sound like a fuel pump problem.

Ethiopian

wasnt the fuel pump, changed the wiring harness and fixed it.