Poor gas mileage is usually due to bad fuel pressure regulator. Raise the tank and pull the vacuum hose off the fpr on left side of the fuel rail. Turn on the key and if fuel drips from the regulator then its bad.

 

yeah backdoc that was the first thing i checked and unfortunately that wasn't the case, no leaks. my second guess guess was o2 sensor or map sensor till i checked for codes.

 

Are those codes current? When was the last time you cleared the codes from the ECU's memory before this last test?

 

I cleared them when I double checked the codes by disconnecting the battery. unless that doesn't clear the codes?

 

That doesn't clear the codes. You have to jump the service connector.

 

if injector 1 is partially blocked, the system might try and richen up all cylinders trying to compensate.

 

jondog9, how do i jump the service connector to clear the codes? is it the same connector i jumped to check the codes? bluevitz_rs would injector cleaner in the fuel clean that out?

 

jondog9, how do i jump the service connector to clear the codes? is it the same connector i jumped to check the codes? bluevitz_rs would injector cleaner in the fuel clean that out?

Yes it's the same one. It took me a couple trys to successfully clear my codes the first time I tried it.

 

thanks jondog ill do this after i get off work this afternoon then hopefully i can get a true reading on my codes.

 

 

looks like it cleared followed the instructions and the light started blinking non stop and now when i try to jump the service connector to check codes the mil stays red with no blinks. does this mean i have no codes? light goes off if i take the jumper out, turn everything off, turn everything on and start the engine.

 

guess the answer to my question is answered in the code list as no blink do to the jumper being in the service connector.

 

leaves me wondering why im running so rich when the fpr isn't leaking and no code.:/

 

Those codes could be from the past, unrelated to your current problem of running rich. I would go ride the bike for 30 or 40 miles, then check for codes again.
Are you running a power commander?
New spark plugs may be in order, how old are yours?
Have you tried feeling for temperature differences in each downtube of the header? That could clue you to a cylinder not firing properly.

 

il re-check the codes. spark plugs are new i changed them out a few months ago to see if it fixed the problem it just cleared up the smell a little for a short time. all headers are hot and seem to be operating normally via touch (im a welder so hot metal isnt a problem). ordering a new headlight wire harness should fix the temp sensor reading problem.

 

If you're running rich, I'd pull the plugs again and take a look. I'm assuming you used iridium plugs?
No power commander, or other fuel management add-on?

 

Yes iridium and no Powerm Commander bone stock except k&n filter and flange on two bros racing pipe.

 

And checked for codes no blinks just a solid red light.

 

2001 cbr 900 -929 the light blinks 8 times is that even a code?

 

Hello! did you manage to solve the problem of it running too rich?