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Old 07-21-2012, 11:10 AM   #1
cp6rider
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RC51 engine bogg

2003 RC51 with 15K on it. this happend at highway speed. hit a bump on beltway, nothing big just normal and the motor bogged down. felt like an engine brake or if i had pulled the brake in myself. it happened long enough for me to look down at the controls then the braking/bogging stopped and it felt normal. any ideas?
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Old 07-21-2012, 11:19 AM   #2
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Is your kickstand spring loose?
The bump could have caused the kickstand to momentarily break contact with the switch causing the bike to die for a second.
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Old 07-21-2012, 12:15 PM   #3
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Quote:
Originally Posted by Patrick View Post
Is your kickstand spring loose?
The bump could have caused the kickstand to momentarily break contact with the switch causing the bike to die for a second.
That's what I was thinking
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Old 07-30-2012, 05:11 PM   #4
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i checked the kickstand and it is firm without any shake/wobble to it. could it be some problem with the power commander or something like that?
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Old 07-30-2012, 05:13 PM   #5
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Possibly, you may also look for any loose connections.
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Old 08-01-2012, 06:45 AM   #6
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Patrick, this morning it did it again and this this time the FI light came on during the bogg then off when the engine went back to speed. same idea, loose connection?
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Old 08-01-2012, 07:52 AM   #7
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Yes loose connections check that first. I put zip ties around the connectors just to keep them tight.
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Old 08-01-2012, 10:34 PM   #8
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I have recently discovered a flaw in the connection where the power wire passes through the fuel pump stay. I'd be willing to bet that many fuel pump assy. have been replaced due to this.

Basically there's a brass rivet that ties two eyelet connectors on each side of a nylon insulator and after awhile resistance develops between the rivet and the eyelet. So it's very possible your fuel pump could be shuting off.

I'm in the process of repairing mine with a threaded brass stud with a 4mm thread. In no way will it fail again.

BTW, I have the RC51 that was once Patrick's.

Last edited by Tiller; 08-01-2012 at 10:37 PM.
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Old 08-01-2012, 11:08 PM   #9
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did you check battery connections? i had that exact problem on the triumph and it was a loose neg cable.
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Old 08-02-2012, 12:18 AM   #10
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I have a loose pin in the wiring harness on mine. Too lazy to replace it lok. I've got the ecu wedged in the tail. I can get it to die just by wiggling the wires on the ecu. Try that maybe.
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Old 08-02-2012, 08:47 AM   #11
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Quote:
Originally Posted by cp6rider View Post
Patrick, this morning it did it again and this this time the FI light came on during the bogg then off when the engine went back to speed. same idea, loose connection?
Definitely a loose wire/pin/plug.
Those are always fun to find.
Take the harness plugs apart and look for signs of corrosion or burning, or loose/pushed back pin terminals.
Apply dielectric grease to them as you go back together.
With the bike running, wiggle the wiring around each plug and see if it affects the bike.
Last but not least as Japawhat said, check your battery terminals and make sure they're tight/not corroded.
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muad

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Old 08-02-2012, 03:32 PM   #12
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Have you tried checking the FI code?

If you need any help let me know. I know the RC pretty well. And so does Patrick!
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