150 efi no spark on 1 cyl

[Cmackr56]

I have a 97 150 efi. #6 has no spark. I have eliminated the coil by swapping the hotwire from #4 to #6. So as I stand now,:% I know I have a good plug (new) good coil wire and a good coil. Where do I look next?

 

[JUSTINTIME]

Re: 150 efi no spark on 1 cyl

trigger or cdi box
or u getting voltage to the coil?

 

[Laddies]

Re: 150 efi no spark on 1 cyl

Because a trigger is a winding if it fails on a 4 or 6 cyl engine it will effect 2 cyls, so that leaves the box, switch 2 wires at the box and you will know for sure

 

[Cmackr56]

Re: 150 efi no spark on 1 cyl

trigger or cdi box
or u getting voltage to the coil?

As best as I can tell, I'm not getting voltage to the coil. because the coil and plug will fire when swapped to another cyl.

 

[Laddies]

Re: 150 efi no spark on 1 cyl

There is a 95% chance its the switchbox