blue arching on bottom two cylinders

[stratosfear1971]

1998 evinrude intruder. blue arching on bottom two cylinders

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I was running my boat on the lake,everything was going fine.
I stoped my boat to fish and started it up agian and it was running really rough and hard to get on plain.
I went home and checked various things on it.
I noticed in the dark that the two bottom plug wires where arching from the boot to the plug. Well I replaced the plug wires, no fix. I replaced the plugs, no fix. I switched the coils around to see if it was one of them. no fix.
Does any body have any advice on this matter, Im stumped and dont know what else to do and im not even shore if this is the cause of the problem, but i think it might bebecause i did here spark knock on the motor going back to the boat ramp.

 

[ryendube]

Re: blue arching on bottom two cylinders

1998 evinrude intruder. blue arching on bottom two cylinders

--------------------------------------------------------------------------------

I was running my boat on the lake,everything was going fine.
I stoped my boat to fish and started it up agian and it was running really rough and hard to get on plain.
I went home and checked various things on it.
I noticed in the dark that the two bottom plug wires where arching from the boot to the plug. Well I replaced the plug wires, no fix. I replaced the plugs, no fix. I switched the coils around to see if it was one of them. no fix.
Does any body have any advice on this matter, Im stumped and dont know what else to do and im not even shore if this is the cause of the problem, but i think it might bebecause i did here spark knock on the motor going back to the boat ramp.

what do you mean by arcing from the boot to the plug? from the way you describe it, arcing through the boot to the base of the plug? or arcing out the bottom? Only way it would arc (jump) is if boot was damaged, plug insulater was cracked, wire/clip inside not making contact.
Electricity is going to take the path of least resistance so.....

If youv replaced the plugs, wire and boot, swapped around etc.... /shrug?

( I ASSuME you used new wires and plugs and the proper ones?)