hi guys,

i have an 04 f4i. my main problem is when i start the bikeup, it idles somewhat rough. if i immediately give it aquicktwist on the throttle it will die. if i wait say about 30 seconds, i twist it, it will cough/stutter then race up however hard i bring it up to the powerband, then i am good to go. and it rides like a charm. my opinion maybe its too cold.i understand you should let the bike warm up, but for it to die if you give a throttle twist at startup i dont understand that one.

my FI light blinks when i turn it on so there lies the problem. i got the manual. looked it up.

i have been getting 8 blinks on my FI lights. looked in the manual and this list this as poor engine response when opening the throttle quickly. (theres no poor response after i let the bike warm up. after about 5 minutes of riding it rides just fine with no poor engine response when opening it up)

7 blinks lists it as hard start at low temp. (which best suits my case)

i started it up today and i swear it looks like 8 blinks but ULTIMATELY I BELIEVE THERE IS A LOOSE SENSOR MAYBE?

7 blinks says check the ECT sensor.
8 blinks say check the TP sensor.

now this manual i have on my computer has not the greatest quality pictures. so here is where i need you guys who are familiar with disassembling the tank and to get to the sensor WHICH may have loose or poor contact which may be causing this problem.

to remove the tank. i take the seat off. remove the 8mm bolts and the 12mm bolts. now its ready to be taken off. heres where i am nervous because i have never removed it. can anyone describe it to the best of their ability.



then i am assuming i have to play with some hoses before i remove.



this isnt my bike, just some better shots of a tank removal and the hoses. can you describe these lines.


ok i get it off and now heres what i am suppose to be looking at and the area of the sensor i am to look at.



from here is the sensor easy to locate? is it just a connector that i have to fiddle with?

i hope these pictures maybe give you a better idea in your mind of what i have to deal with.

for those who actually know what im trying to deal with here, i appreciate any responses you can give me. i am trying to figure this out on my own because i have been quoted from a local dealership (which are notoriously known for ripping people off) that it will cost ALOT for them JUST TO LOOK AT IT even though my gut feeling tells me they are going to rip off the tank and see a sensor may be loose and then charge me out the ***. plus i just want to get more knowledgeable on the subject of servicing my bike without a highway robbery dealer killing my wallet with something i can do with help of a service manual and a great community online to help me.

again, for those who actually know what im trying to deal with here, i appreciate any responses you can give me.

thank you,
pat

 

See if you can get to the throttle position sensor without removing the tank. Looks like it's on the right side of the bike just behind the frame.

My 600RR TP sensor is on the left side of the bike in basicaly the same area and I was able to get to it easily without having to remove the tank.

 

Check your IAT (intake air temperature) sensor... it's right on top in the front center of the airbox

 

don't i have to remove the tank in order to check out the IAT?

 

Yup.... it's easy though just pop it up a lil bit and it's right there

 

no need to remove the tank completely. just loosen the two bolts by the seat a little (leave them in) and take out the two bolts at the front of the tank. The tank will pivot up like the hood of a car. Just prop it up with something... I use a heavy duty piece of styrofoam, you can get by with a piece of wood. The TPS is pretty easy to find, right above the cam chain tensioner.

 

Its most likely going to be your tp sensor. and im not fusre if that can be replaced seperately or if its permanently attached like the 04-05 4 1000's are. but check that. And definately let your bike warm up before you decide to giveit an handfull of throttle off the idle. atleast let the temp guage register. if you rev it cold, the motor mayseize due to lack of lubrication and tempurature of surrounding metals. ive acutally seen a cold seize where the piston melted to the cylinder. no good, 2 broken rods as a result. what i don in the morning is fir the bike up and then put all my gearon, taht way by the time im ready to ride the bike is nice and warmed up