misfiring

[bufordg]

I have a 75--85 hp Evinrude that is getting intermitting fire on 1 cyl with a spark tester on it you can see it stop for a split second and that is when it misses. changed coils and power pack and does the same thing. any help and suggestions would be greatly appreciated. Thanks

 

[boobie]

Re: misfiring

Have you checked all the ground wires and connections for being good, clean and tight ??

 

[bufordg]

Re: misfiring

Haven't checked all of them but I will check them all monday and try that Thanks a bunch

 

[bufordg]

Re: misfiring

I have checked all my grounds and changed coils again everything is firing now but still has a miss in it you can pull plug wires off and all will make a difference except no 4 cly. Took plug out very good fire changed plugs again checked compression average comp is 115 per cyl. need help on this for sure any more suggestions or things to try. Thanks