Fuel Injector Problem, but very confusing. - 600RR.net
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post #1 of 5 (permalink) Old 07-10-2014, 09:00 AM Thread Starter
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Fuel Injector Problem, but very confusing.

Well alright so I'll tell you when this happened and what happened.

Firstly, I have an 05 CBR600rr, with currently 39k miles.
Just recently bought from a guy, knew it had work that needed to be done.
But obviously he didn't tell me the real problems and I was too dumb to spend the $95 to get it checked out at a dealership.

So about three days ago I was riding around town, normal day.
I stop at the bank and when I get back to my bike, what's this?
It's turning over, but not firing up.

Weird, I think to myself.
So not knowing much about bikes, I just kind of give it a good thrust foward in first and bam, it fires up.

I then remove my thumb from the started, instantly dropped revs and killed the engine.
Well I proceed to do that for about ten minutes.
Get frustrated and walk my bike down to a more open area of the parking lot.


So I realize, the FI light that usually pops up when the Engine Kill Switch is turned into the on position, actually doesn't even show up.
So I sit there for about an hour, trying to start it here and there.

Finally, I get it to start up, I rev the crap out of that thing and somehow, that fixed the problem and the FI light came on and kept coming on time and time again.
Don't know how but it did.
Then it had a steady idle after I took my thumb off the start button.


Well so I didn't think much of it, I am a newer rider, I have about 1500 miles under my belt, so not much.
So I just mosey on home hours later and park her.

Well the next day, I decide to get a new front tire, make an appointment, the guy is on lunch so I got to In-n-out and get a burger.

Well about an hour later, I stop down the road at my exes house and hang out for about an hour. I then go out to my bike and it doesn't fire up.
So like a noob, I just think of maybe I should bump start it.

Not actually knowing how to do so.
I just roll it down the only hill which I was right next to, got about 20mph speed and I just held in the clutch and tried starting it, like a dumbass.

So I ended up finding a few other guys who rode bikes on the street to help me out.
We checked my fuses, they are all fine.

I have read other threads about the same problem for the most part.
But here is the part where I seem to have a different scenario happening so far.


We ended up bump starting it, repeatedly.
Nothing, we got an occasional putt, about twice out of the 30 times we tried.
So I park the bike and wait for my moms ex who works on harleys to attempt to take a look.

We take off the side fairings, long behold, this dude duct taped all these wires together.
Like, wow.
Duct Tape...

So I take the tape off, look at the wires and it's the three wires that hook up to the headlights, which also were not working now, along with the turn signals.
But the Dash and the tail light works fine.

So we properly re attach the wires to themselves and wrap it with electrical tape.
Still, the FI symbol doesn't show up on the Dash when I hit the killswitch to on.

So I feel stuck, We end up loading up my bike and I go to my sisters.
Well, much later in the night yesterday, I go up to the bike to show my aunt what it sounds like when I try to fire it up.
Well, I hit the starter and woah, I heard a pud.

So I try it again and the SOB fires right up.
I turn it off a few more times and fire it up and now it works perfectly.
The FI light comes on and now it's priming and works.

I'm afraid to even go anywhere now because I don't want to get stranded in Sacramento or god knows where since I adventure like crazy.

I mean this is a starter bike for me, not too worried about it being a junker, it is a one season rider.
But when I sell it, I'd rather be morally aware that I didn't sell somebody a P.O.S.

Because small problems may be inconvenient but they can also be very unsafe.

Now I hear a lot about this Bank Angle Sensor and that may be a problem.
Not entirely sure, this guy must have used this as his bike to stunt and drop and it was just very neglected.
Because it's obviously been dropped more than once at a decent speed since the slider, a corner of the metal is grinded down and there is obvious scratches, the coolant was bone dry, the oil, really low.
So dirty, the chain is disgusting and loose and the front tire is damn near a slick.

I mean I don't mind a little project, but damn.
I admit, he got me and it's my fault being so neglectful when buying it.


Can anyone tell me your ideas on what this problem may be?
Since it will just randomly fix itself.
I don't let the bike get over 220.
Ever, it freaks me out even seeing 200 haha.


I do ride like a bat out of hell.
When I can at least.
I know it's probably not very smart given the problems but, I know the risks of being stupid.
I've hit 147 in this bike already, normally I just do freeway miles though, nothing too ballsy.
Since I do not fancy tickets.
I have dropped the bike twice, (Not moving)


So do you think those duct taped wires could be the big problem, they are like that on both sides of the fairings as well,
I can post pictures later as well if ya'll would like.

I'm a painter, no electrician, but that does not look right at all haha.


Thank you for reading my novel of a post, haha.
I am just very frustrated.

Last edited by Elgrian; 07-10-2014 at 09:07 AM.
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post #2 of 5 (permalink) Old 07-10-2014, 10:39 AM
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Has it done it since you reattached the wiring properly? Was most likely a poor connection on the right wire. I've had the same problem and it was resolved when I fixed the wiring.

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post #3 of 5 (permalink) Old 07-10-2014, 12:10 PM
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Check the kill switch, seems its common that they cause problems
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post #4 of 5 (permalink) Old 07-10-2014, 02:23 PM Thread Starter
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Quote:
Originally Posted by Untamed Entity View Post
Has it done it since you reattached the wiring properly? Was most likely a poor connection on the right wire. I've had the same problem and it was resolved when I fixed the wiring.

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Well when we re attached these wires, it didn't make any difference.
Then just randomly started working like 8 hours later in my truck bed.

So I'm confused as to if that's if.
I still may take it down to a shop to get it really figured out, but I'm just really not wanting to pay the $98 hourly rate for shops out here lol.
For something that would take them 20 minutes.
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post #5 of 5 (permalink) Old 07-10-2014, 07:59 PM
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Quote:
Originally Posted by Elgrian View Post
Well when we re attached these wires, it didn't make any difference.
Then just randomly started working like 8 hours later in my truck bed.

So I'm confused as to if that's if.
I still may take it down to a shop to get it really figured out, but I'm just really not wanting to pay the $98 hourly rate for shops out here lol.
For something that would take them 20 minutes.
My issue ended up being the gray connected for the harnesses under the left side air duct cover (sitting on the bike) not making connection for the fuel pump wire. Green if I remember right....

Buddy of mine also had same issue but his was that the connectors on the bottom of the tank were hitting the frame and grounding out cuz the tank wasn't bolted on tight. (Bike was stolen, tampered with and recovered.)

I'd suggest tracing the wires right from the fuel pump and checking the relays under left side fairing.

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