no spark on cylinder # 1

[baby5]

Hello I'm looking for advice for mine 2003 sugarsand jetsport mercury 175
I'm not g etting spark in cylinder # 1.i sswapped plug wires and still no spark on #1 after i swapped coil and no spark on cylinder # 1.is going two wires one is ground that is good other is green and no signal is goig to power pack.
is my power pack bad when i got other 2 spark runing good?.
thank you Zack

 

[bilge rat jim]

Swap the leads from the switchbox to the coils around, if the problem follows #1 lead, either a trigger or switchbox fail. Check resistance on the trigger leads- brown to white, white to purple, purple to brown- all should read 800 - 1400 ohms.

 

[baby5]

Tthank you
just swapped green wire from coil to second coil and now no spark on seccond cylinder.ok for sure is no signal going from switchbox to coil.is possible switchbox is bad?other green wires has signal

 

[Dukedog]

switch box....most recommend changin' both of 'em.... sometimes tha bias circuit can mask tha actual "bad box"..