| Author |
Message |
    
Ptjaws
| | Posted on Sunday, January 17, 2010 - 02:08 pm: | 
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Hi folks, I have an'05 XB9R that has stopped firing in the rear cylinder. I am not a mechanic...I assume it has quit firing because the bike runs awful, the front exhaust pipe gets very hot, while the rear exhaust pipe remains cool to the touch. I had been out riding, shut the bike down at lunch, and when I went back out to crank it up the problem manifested. I changed the fuel, charged the battery, and then went TDY for six weeks. I tried the bike again this morning and the problem remains. The check engine light is on from the time the key is turned on until it's turned off. Any thoughts on what this problem may be? Is there a way to check trouble codes without a trip to the dealer? I recently moved to Kansas and the nearest dealer is Gail's HD-Buell in Kansas city, does anyone have any feedback on their service department? Thanks! |
Froggy
| | Posted on Sunday, January 17, 2010 - 02:53 pm: |
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Usually when a cylinder won't fire, its because of a fouled plug. A fouled plug would not throw a check engine light, which makes me think it may be a problem with the injector. If you have ECMspy and a laptop, you can run diagnostics and check trouble codes. Other than that, you can check the trouble code by jumping the pins on the diagnostic connector. Do a search on here for that procedure. |
Ptjaws
| | Posted on Sunday, January 17, 2010 - 02:54 pm: |
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Update,
I'm either retarded, not very observant, or i unknowingly changed something. Now, when the ignition is turned on, the engine light turns on for about 4 seconds, then goes out, not to be seen again until I turn the bike off and back on again. Then it does the same thing. It' still only running on one cylinder. |
Ptjaws
| | Posted on Sunday, January 17, 2010 - 02:57 pm: |
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I'll check the plugs, I don't have a ECMSPY...I'm not familiar with that equipment, I'll google it! I searched for the trouble code procedure and ended up downloading the Shop manual. I haven't found the data port yet but I'll keep looking. Thanks, Froggy, for the advice. |
Akbuell
| | Posted on Sunday, January 17, 2010 - 03:04 pm: |
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Like Froggy said, my first choice would be a fouled plug. Second choice is a loose/bad spark plug wire. Checking one will allow checking the other.
Don't be afraid to contact a sponsor here and get a service manual. As necessary (IMHO) as fuel. There is a procedure to check codes without a scanner or ECMSpy, and tables to tell you what the code means. And how to fix it.
Hope all this helps, Dave |
Ptjaws
| | Posted on Sunday, January 17, 2010 - 05:06 pm: |
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Well, i checked the plug, the wire seemed to come off way too easy so I applied a little pressure with a pair of pliers and put it back on. No success. So off with the wire and plug. The plug was not wet immediately after running the bike. So i switched the front and rear plug wires...no change. the engine light is back to staying on all the time. Could the injector have failed? next stop, find that data plug! Thanks for the input guys. |
Froggy
| | Posted on Sunday, January 17, 2010 - 05:22 pm: |
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Data plug is up near the headlights on Firebolts |
Ptjaws
| | Posted on Sunday, January 17, 2010 - 05:27 pm: |
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Update 3,
The trouble code given is 15, Intake Air Temperature sensor. I'll be checking the connection, but i'm not sure why that would cause a rear cylinder to not fire. I let the code run three times to make sure it was the only one.
(6 flashes-one flash, five flashes-six flashes, then started with the same code again) |
Froggy
| | Posted on Sunday, January 17, 2010 - 10:50 pm: |
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If your IAT is not connected or is damaged, the bike will run like ass if it runs at all. |
Sparky
| | Posted on Monday, January 18, 2010 - 01:58 am: |
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If it were me, I'd put in new spark plugs and plug wires just to rule out any chance of there being an insidious defect in either of those items.
Regarding the IAT sensor, check it to see if it may be damaged or covered with dirt or oil. If it's dirty, clean it with isopropyl alcohol. |
Kalali
| | Posted on Monday, January 18, 2010 - 01:18 pm: |
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I agree with Sparky. It is almost impossible to rule out a faulty plug wire by just visual inspection. You can get them for about $4 a piece from the dealer. |
Ptjaws
| | Posted on Monday, January 18, 2010 - 03:35 pm: |
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Thanks guys- The bike ran the same with the two plug wires exchanged (front on the rear and rear on the front) My new 1125R is being delivered on thursday so I'm just going to have the delivery guy take it back to the dealer and have them check it out. They're 2.5 hours away and closed today anyway. The IAT looked pretty clean, I cleaned the connector plug and receiver then plugged it back in. No effect. We'll see what happens. Thanks for the input, and I'll let you know what happens. |
Ptjaws
| | Posted on Thursday, January 21, 2010 - 08:59 pm: |
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Update-
I started the bike today to load it on a trailer to go to Kansas City Harley. The bike was intermittently firing on the rear cylinder, where it wasn't firing at all before. I have no clue why or how. There's gotta be a bare wire grounding out somehwere. The only thing I changed was putting the air cover back on. I guess we'll soon see. |
Ptjaws
| | Posted on Saturday, January 30, 2010 - 07:38 pm: |
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Last update- Problem is fixed:
The Buell mechanic stated that the oil was severely over serviced. This in turn was causing oil to be splashed up to coat the rear spark plug with oil. He replaced the plugs, changed the oil, and now I'm good to go. |
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'05 XB9R only one cylinder is running