only one coil is sparking on a 76, 135

[peterbog1]

I tryed looking around one the forum and found some good info but not what i'm looking for.
I have a good spark on #3 but don't get any on the others, I took the #3 wire and moved it on the power pack to the 1,2,4 post on the power pack and turned it over and no spark on the 1,2,4,.
then I took the 1,2,4, coil and tryed it on the #3 post and they all sparked.

 

[DHPMARINE]

Re: only one coil is sparking on a 76, 135

Good testing.Your coils are good.To go further without a peak-reading volt meter is hard.Stevens Instruments makes a good one,and the outboard diagnostic sheet it comes with is great.

You might try putting the leads back as original on the power pack,and switch sensor and charge coil leads as a test.But in all probability the power pack is bad.90% of the time,

DHP

 

[peterbog1]

Re: only one coil is sparking on a 76, 135

Thanks DHP
I try to switch sensor wires and thay all fired a spark,
so next i will change out the power pack
Pete