Greetings! I have an '81 CB250N with running trouble. It starts fine, idles ok for a while, and can be reved, but not long after i can roll the throttle on to full power and it does nothing but idle then when the throttle is returned to the idle position the engine dies. I've cleaned the carbies and replaced and lubed up the throttle cables. It's got new plugs that were gapped properly. I'm thinking it's an electrical problem. This is my first bike so i'm kinda in the dark any suggestion would be greatly appreciated!
Greetings! I have an '81 CB250N with running trouble. It starts fine, idles ok for a while, and can be reved, but not long after i can roll the throttle on to full power and it does nothing but idle then when the throttle is returned to the idle position the engine dies. I've cleaned the carbies and replaced and lubed up the throttle cables. It's got new plugs that were gapped properly. I'm thinking it's an electrical problem. This is my first bike so i'm kinda in the dark any suggestion would be greatly appreciated!
Adam.
Could still be a loose jet in the carb, or perhaps the needle has let go, and sticks in the nozzle.
Electrical could be, perhaps the coil. Start by buying a workshop manual. Many people skip this since there's dealers and forums to solve your trouble. In the manual there's a chapter troubleshooting. Here you will find the diagnostic process of getting a voltmeter, getting a reading on the coil terminals, battery and condensor..
Get back soon, perhaps I can help if you have more questions...
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