Cb750 spark

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Cb750 spark

Shakabu
Hello everyone . I'm new to posting her but have been following for a few weeks now . I apologize if it's been answered before . I havnt had success finding one .
I recently purchased a 98 cb750 nighthawk. Got it not working which also means no spark plugs or wires . I have no idea how to route them. I have come across wiring diagrams which don't help me much . I found a few other guides but have cb750k ,f etc so I'm not sure which wiring pertains to my machine . any help would be much appreciated . thanks in advance
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Re: Cb750 spark

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If you are speaking of spark plug wires, there is not really any diagram. These are not like a car engine with a rotating distributor which must have the wires in order to operate. These engines have two coils which each have two plug wires coming out of them. The coil on the right should have longer wires then the one on the left, and the longer wires go to cylinders 1 and 4. It does not matter which goes to which as they both fire at the same time. When one cylinder is on the compression stroke the other is on exhaust, so one cylinder is just getting a "wasted spark." The other coil should have shorter wires, and these go to cylinders 2 and 3. Again does not matter which goes to which. If while trying to start the engine, you get backfiring, it means that it is 180* out of time. Just swap the (I think) blue and yellow wires going to the coils.
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1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
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