So its been over three weeks of trying to figure out why my bike won't start. I decided to save some money and do some digging of my own but still haven't found the problem Any help would be greatly appreciated.
Here's where I'm at:
Three weeks ago I washed my 2012 CBR1000 like normal. (careful not to get water in the exhaust, intake, and on as little electrical as possible.) I started it to help dry it out but it ran like crap at a very low idle spitting and sputtering. Decided to let it dry out till the next day and put it in the sun. After that, the bike no longer started. It will crank but not actually start. No check engine light comes on.
I tried everything I can think of:
Tested the battery
Took out and sand blasted the plugs
Checked fuses
Checked & cleaned air filter/ air box
Took out & tested starter and gears
Took out PCV
Checked stator/regulator
Took off and visually inspected start/kill switch (don't know how to test other than hearing the fuel pump prime)
Checked tip sensor
Took off and cleaned kickstand sensor
Checked main ground bolt
The bike will only bike fire after a bit of trying to start it. I hear the fuel pump prime and I smell gas after trying to start. A couple of times the bike started for literally a half a second and shut off. The dash, lights, horn, and everything else turns on.
If anyone thinks they have any idea please shoot me some advice. This is so frustrating and bike season is here!
The pump primes and I smell the gas so maybe the switch is fine. It wouldn't hurt draining the gas so I'll try that. I wouldn't think the gas would be old cuz I was always riding and refueling it. Maybe I just got a bad batch of gas?
So I tried that and it turns out no fuel is coming out of the injectors. Does this mean for sure it's the fuel pump or could it still be an electrical problem I suppose
That's definitely not bad gas. The engine is spinning nice and strong and not even a trace of ignition is present. If the pump is priming then check for spark across the plugs. If none of them are getting spark then something electronic is telling them to not fire up. Check kick stand switch and ground connections as well.
Thats not based in fact - My SV and my RR cranked good this spring ,but would not fire or even give a hint of even wanting to start . Fresh gas and boom both fired like day brand new . Ive also bought so many dirt bikes and lawn over the years for almost nothing and most had simple fix's fresh gas fuel filter and fired up . Once I got rm250 that had a new stator wired bakwards LMAO the bitch would start on the kickback and run in reverse . I not saying his problem is bad fuel , but You cant just rule it out , 99% of the time its the simplest solution .
I visually checked the kill switch and took it apart, it looked ok to me. mo corrosion. I took off and cleaned the kickstand switch, it was grimy but looked ok. Is there another way to check that if I can't start the bike? I checked the bank angle and it's working normally.
I feel like it has to be something simple and water just got somewhere like a connection it shouldn't have. That's why i wish it was just a fuse or something simple anyways. Everything seemed to be dry, even the wiring harness because of the plastic tank cover on top of the metal tank itself.
Probally not - unless the bike had prior condition . THe bike is running open loop when your trying to start it , so unless somthing is way off like not pluged in its not gonna throw a code . you can check them your self though . Its in the manual which is avail for free DL on this site somewhere . If you lived near me Id fix for ya ,for way cheeper than the dealership . I
So I made some progress, I think.... I followed the service book and checked the iacv. It seemed to work fine. I put it back in and then after turning on the ignition, the check engine light came on. I started the bike and it actually started! Although now it idles at like 4k. I'm going to try disconnecting the battery and maybe it will reset the light and/or the computer.
I was able to figure it out. It was a bad iacv. It somehow got off the guide pin and jammed inside the throttle body, assuming after it went faulty. I had to take off the throttle body and tapped out the jammed cylinder of the iacv from the bottom of the throttle body. After over a month, I'm back on the road
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