Question:
i have vfr 400 nc 30 which is running on three cylynders. I have replaced spark plugs still not working, bike is reciveng fuel at all cylynders, there is a very week spark at the front left cyl (sitting on bike) front lft. i have swped ignition coils and leads stil nt runnin right. i want to know if tese bikes hve known problems for idnition modues or cdi units. cheers
Answers:
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They're not known for those kinds of issues.... the only big one is the Reg/Rec (and really the whole charging system).what is the best motercycle on the street right now because im thinking about buying 1?
Does this happen All the time, or does it run alright when you start it up after an overnight, and then go to 3 cylinders after a bit? If so, then that's very much electrical, downstream of the CDI... heat = resistance, and as the heat builds (and it Does with all of the Honda v4s), it keeps things from working right.
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Anyway, start with the obvious stuff like replacing the plug wire and spark plug boot. Then test/replace the coil, and on up the stream till you get to the CDI.
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Good luck with it
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I'd be surprised if in '91 there was much of a computer (ignition module/cdi) in any bike managing the spark, etc. Was fuel injection even around in any bike back then? I think you're on the right track -- just keep following the problem back from the weak spark through the charging unit. Maybe the points on the distributor need to be replaced or regapped?More Questions & Answers ...
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