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I bought an old 82 GS 750 today with all the plug wires off, I need the firing order and how the cylnders are numbered. Can anyone help?
 

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All the inline fours are the same in this (that I know of, maybe BMW does it differently, but every japanese inline-four I ever saw was the same) sitting on the bike, from left to right, the cylinders are 1-4... there are two coils, and the one coil fires cyls 1 and 4 and the other fires cyls 2 and 3. you can swap 1 and 4 or 2 and 3, it makes no difference at all, but you can't put the 2-3 coil on cyls 1 or 4 and vice versa... you should be able to just take the long spark plug wires and put them on cyls 1 and 4 and the shortys go to cyls 2 and 3. Lemme know if that all makes sense.
 

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Discussion Starter #3
thanks fastcat, that did the trick for me
 
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