Question about 2005 Honda CB 250 Nighthawk
How do you set timing
The timing is not the problem if your bike is surging at top end. The timing is fixed on these models and it's not like the old days or like a car. Your problem can be one of many.
First: does the bike idle ok after it is hot?
Second: Have you changed the air filter to an after market type? Changing the filter to an after market filter will lean the motor out which will cause a "surge" at full throttle. You will need to possible jet the motor richer to compensate for the leaner filter design.
Third: Try rolling out og the throttle from full throttle by about 1/8th and see if the engine RPM's increase and the surge goes away, if so the motor is to lean.
Let me know the answers to these questions and I can help you resolve your problem.
Third: how long has it been since you have set the valves? a tight valve can cause many many problems including this one.
Posted on Nov 30, 2008
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Posted on Jan 02, 2017
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