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post #1 of 5 Old 05-05-2013, 4:28 PM Thread Starter
 
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Need advice and help

I have a 1994 900rr. It had been sitting for probably over a year when I got it. I am able to get it to start, but it sounds like its only running on 3 cylinders and dies after seconds. I have pulled the carbs off twice and cleaned and checked for spark. One time while checking spark it seemed that the spark was week but then the next time I checked it seemed fine. My question is would the voltage rectifier/regulator cause this type of misfire type issue. I can't seem to find a particular cylinder that is not firing. Any help or advice would be appreciated.

Thanks,
Steve
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post #2 of 5 Old 05-06-2013, 2:43 PM
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Re: Need advice and help

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Originally Posted by womack616 View Post
I have a 1994 900rr. It had been sitting for probably over a year when I got it. I am able to get it to start, but it sounds like its only running on 3 cylinders and dies after seconds. I have pulled the carbs off twice and cleaned and checked for spark. One time while checking spark it seemed that the spark was week but then the next time I checked it seemed fine. My question is would the voltage rectifier/regulator cause this type of misfire type issue. I can't seem to find a particular cylinder that is not firing. Any help or advice would be appreciated.

Thanks,
Steve

No, the regulator has nothing at all to do with spark.
Have you tried bypassing the fuel pump?

"I won't forget that ride for a while. Maybe you're right. Living fast might be worth the final crash. Maybe that's the secret you fliers know." - Flight of the Intruder
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post #3 of 5 Old 05-06-2013, 3:03 PM Thread Starter
 
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Re: Need advice and help

Thanks for the reply. You answered my main question which was if the regulator can affect the bike like that. I haven't bypassed the fuel pump but I can feel it coming on and when I took the carbs off the bowls were full of fuel. I replaced the plugs and now I am about to try and check the ignition coils. Not sure what else to check at this point.
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post #4 of 5 Old 05-06-2013, 3:06 PM
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Re: Need advice and help

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Originally Posted by womack616 View Post
Thanks for the reply. You answered my main question which was if the regulator can affect the bike like that. I haven't bypassed the fuel pump but I can feel it coming on and when I took the carbs off the bowls were full of fuel. I replaced the plugs and now I am about to try and check the ignition coils. Not sure what else to check at this point.

If you are certain the pump is supplying fuel, the next move is to check if it's supplying too much.
Disconnect the pump so it doesn't run.
Drain all four float bowls.
Try starting the engine on starter fluid.
If she fires then you probably have dirty carbs allowing fuel to flood the engine.

"I won't forget that ride for a while. Maybe you're right. Living fast might be worth the final crash. Maybe that's the secret you fliers know." - Flight of the Intruder
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post #5 of 5 Old 05-06-2013, 3:13 PM Thread Starter
 
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Re: Need advice and help

Thank you. I will try that tonight after work.
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