| Author |
Message |
    
Pavloxb12r
| | Posted on Tuesday, November 27, 2007 - 11:21 am: | 
|
my beloved firebolt(07) with around 1500 miles on it refuses to fire one of its cylinders(the front one). I couldn't figure out what it was at first , it was starting very poorly, engine was dying unless I add a little throttle, idle at around 800rpms vs. 1100 as usual, also exhaust fumes were cloudy, i notices that one of the exhaust tubes was warm when the other one was hot. i really need advice on fixing it , snow is coming... |
Reepicheep
| | Posted on Tuesday, November 27, 2007 - 11:52 am: |
|
I would start with plugs and wires, then maybe the temperature sensor, then maybe wiring bundle and ECM connections.
A bike with a dead stator will also run really badly once the battery gets discharged. Is it turning over OK? |
Rob04xb12
| | Posted on Tuesday, November 27, 2007 - 01:41 pm: |
|
I rode my 04 XB12 about 50 miles on one cylinder because one of the plug wires rattled itself off. It was pretty tough keeping it running!
Check your wires, replace the plugs and see what happens. Also, pull the front plug and just see if there is ignition to the plug (turn the motor over with the plug out) |
Buell_bert
| | Posted on Tuesday, November 27, 2007 - 05:27 pm: |
|
Good advice. Yea just switch the plugs to see if it is that. Check the resistance of both plug wires to see if they are close. You have power to the coil. Not sure on your bike but on my old Harley both plugs fired at the same time so if only one fires it could be an internal open in the coil. If they both fire at the same time just switch the plug wires to the cylinders and see if the front works. Hope this helps. |
Pammy
| | Posted on Tuesday, November 27, 2007 - 05:49 pm: |
|
With an 07, what you should do is contact your dealer. Warranty is intact, yes? |
Buell_bert
| | Posted on Tuesday, November 27, 2007 - 05:56 pm: |
|
Good idea Pammy I'm used to doing it myself. |
Buell_bert
| | Posted on Tuesday, November 27, 2007 - 05:59 pm: |
|
By they way DO both cylinders both fire at the same time? |
Sparky
| | Posted on Tuesday, November 27, 2007 - 09:53 pm: |
|
XB ignitions, being EFI controlled, have separate coils in one housing, fire as single fire ignitions, meaning front and rear cylinders fire independently of each other. |
Cobradave93
| | Posted on Thursday, November 29, 2007 - 07:51 am: |
|
I had the same problem once on my 06 12Ss. It ended up that when the dealership did a TPS reset and then rode it afterwards, it was cold out and the engine wasn't up to operating temp long enough to correctly reset ecm. As a result it learned a rich setting and fouled out a plug. Hopefully it is something easier like a plug or wire, but this is a possibility also. |
Djkaplan
| | Posted on Thursday, November 29, 2007 - 01:49 pm: |
|
You should at least check for a fouled plug before contacting the dealer. The mechanics at the dealership might hurt themselves rolling their eyes. |
Bombardier
| | Posted on Sunday, December 02, 2007 - 07:06 pm: |
|
Swap the injector wires front to back to see if it is a fouled injector. |
Bluzm2
| | Posted on Monday, December 03, 2007 - 11:09 am: |
|
Jason,
If you swap wires, the injector pulses will be out of sequence. I'm not sure if the motor will even run with them swapped.
However, swapping the injectors themselves would be a valid test.
If you do swap injectors, check the o-rings closely. They may leak if they are older and a bit brittle.
Brad
(Message edited by bluzm2 on December 03, 2007) |
Bombardier
| | Posted on Sunday, December 09, 2007 - 11:34 pm: |
|
One of the recall notices talks about the injector wires being on the wrong injectors and still running albeit not well.
Just suggested to at least confirm if it was the injector or the injector wire. |
Buzzie
| | Posted on Monday, December 10, 2007 - 12:27 am: |
|
Ok ...gonna say it again...Cant tell you how many techs in the field dont notice... first ..change the plugs...or have your dealer do it...then ...the throttle cables..the pull open cable should be threaded all the way in to the housing most likely ....then and only then do you want to do the tps and the afv. trust me on this one...08 and later wont have this problem ..but from 03 to 07 all xbs will react like this |
Pavloxb12r
| | Posted on Wednesday, December 12, 2007 - 03:52 pm: |
|
Finals in collage and brutally cold Minnesota weather has kept me out of garage…… but no more. Want to say thanks for all the feedback and advice; i’ll see how far it will get me tomorrow. |
Bluzm2
| | Posted on Friday, December 14, 2007 - 03:22 pm: |
|
Pavlo,
We have had some cold ones lately haven't we?
What part of Mpls you reside?
Brad |
Wackyracer
| | Posted on Thursday, December 27, 2007 - 06:14 pm: |
|
I had the same problem with my '03 Firebolt @ 7K miles. It turned out to be a bad injector. I swapped injectors front to back and the misfire switched cylinders. I replaced the bad injector and it's been happy motoring ever since. If you've checked the wires & plugs already (they should be checked first), then try swapping the injectors to see if it switches cylinders. |
Brandon_m
| | Posted on Monday, May 11, 2009 - 09:29 pm: |
|
Anybody wanna talk me through an injector swap? |
Wackyracer
| | Posted on Monday, May 11, 2009 - 09:46 pm: |
|
Brandon,
I believe that your XB12 has different injectors front & back so you won't be able to switch them around to see if a misfire switches cylinders. My '03 XB9 had the same injectors front & back. In order to change out the injectors you'll need to completely remove the airbox including the lower and then you'll need to remove the two allen bolts holding the throttle body bracket. The injectors are held in place by clips that slide off sideways. It's actually quite easy to do. The hardest part is getting the allen bolts of the throttle body bracket in the tight confines between that and the frame. |
Troubleshooting (Poor Starting/Running/Handling/Ride Issues) »
Archive through March 20, 2008 »
One of the cylinders is not firing.