RC51 won't start please help - Honda RC51 Forum : RC51 Motorcycle Forums
 
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post #1 of 9 (permalink) Old 06-21-2011, 12:01 PM Thread Starter
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Exclamation RC51 won't start please help

Hello All,

I am very confused and need some wisdom and help. A week ago my throttle cable(B) snapped. Last night I get the new one in and take the beast apart to replace it. Once I get it installed and everything put back together she will fire up but won't idle. She just dies quickly. I have tried adjusting those cables every way I could and each time she will fire up and then die. Please help me resolve this I need and want her up and running again.

I thought this would be an easy fix but it has turned into a nightmare

2000 RC51
Black Chrome Windscreen
Erion Racing Exhaust & hangers
Aftermarket under tail
License plate swing-arm bracket
Front Flush Blinkers
43 rear sprocket
K&N Air filters
Rear swing-arm spools
Flapper mod
Frame Sliders

Last edited by jrg05a; 06-21-2011 at 12:12 PM.
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post #2 of 9 (permalink) Old 06-21-2011, 06:44 PM
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Does the engine start and run if the throttle is opened a bit?
It might be the idle adjuster.
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post #3 of 9 (permalink) Old 06-22-2011, 10:00 AM Thread Starter
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Yes it will but as long as you hold it. Where is the idle adjuster and which way or how would I adjust it?

2000 RC51
Black Chrome Windscreen
Erion Racing Exhaust & hangers
Aftermarket under tail
License plate swing-arm bracket
Front Flush Blinkers
43 rear sprocket
K&N Air filters
Rear swing-arm spools
Flapper mod
Frame Sliders
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post #4 of 9 (permalink) Old 06-22-2011, 06:27 PM
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The idle adjuster is on the right side near the oil filler cap.
Turn right to increase idle, left to decrease.
The idle when warm, is 1300 +/- 100 RPM.
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post #5 of 9 (permalink) Old 06-22-2011, 10:34 PM
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If you wouldn't mind in your time of need, take a few pictures of the cables. I want to see the location of where yours broke so I know where to lubricate them better.


Sub has you on the right path.

Take care.



The very first schoolbook that was written had God all over it. --Dave Mustaine
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post #6 of 9 (permalink) Old 06-23-2011, 09:05 AM Thread Starter
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Hey guys found the problem, Sub you were on the right track but the main problem was the map Sensor. I unplugged that and she started right up.

Madbuyer I already have her back together but I will have her apart soon to install the new map sensor


Thanks everyone

2000 RC51
Black Chrome Windscreen
Erion Racing Exhaust & hangers
Aftermarket under tail
License plate swing-arm bracket
Front Flush Blinkers
43 rear sprocket
K&N Air filters
Rear swing-arm spools
Flapper mod
Frame Sliders
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post #7 of 9 (permalink) Old 06-23-2011, 04:33 PM
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i'm curious too...where did the cable snap? Glad you got your problem sorted out
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post #8 of 9 (permalink) Old 06-23-2011, 04:51 PM Thread Starter
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It snapped down by the throttle bodies were it connects. The only thing I can think of is that someone in the parking lot thought they were cool and were messing with the throttle and turned it the whacked it the wrong way. And by them rolling it forward instead of back, it snapped the Throttle cable B.

2000 RC51
Black Chrome Windscreen
Erion Racing Exhaust & hangers
Aftermarket under tail
License plate swing-arm bracket
Front Flush Blinkers
43 rear sprocket
K&N Air filters
Rear swing-arm spools
Flapper mod
Frame Sliders
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post #9 of 9 (permalink) Old 06-23-2011, 10:50 PM
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Quote:
Originally Posted by jrg05a View Post
Hey guys found the problem, Sub you were on the right track but the main problem was the map Sensor. I unplugged that and she started right up.

Madbuyer I already have her back together but I will have her apart soon to install the new map sensor


Thanks everyone
It should run with either MAP or BARO sensors bad, although poorly.
The "ride home" mode of the ECU.
But it's still good you found the problem.
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