[dudeboy]

what is the firing order on a 1200 interstate at the coils?

 

[dudeboy]

1200 firing order

Sitting on the bike, the posts facing toward you
Right coil is #1 and #2
Left coil is #3 and #4
1 and 3 cylinders one the right side of the bike.
From memory,
far right is #1
center right is #2
center left is #3
far left is #4

I changed my firing order to what you wrote and still #4 & 3 don't fire at idle. I pull the plug wires off and it don't make any difference.

 

[dudeboy]

I do have a good spark at idle, good compression, if I pull #1 or #2 it will die . I am getting a good blue spark on all of them. could it be the carbs need adjustment?

 

[dudeboy]

does any one know, why does my Haynes manual say for firing order,1-3-2-4 and I was told to set it at 4-3-2-1 ? it runs the same both ways. crappy.