my 1986 jonhson outboard blowing ignition moduals?

[mikeandjill00]

i replaced 2 recent.. motor sat around for 6 years... both old one were working fine but now replaced.. what else can cause these to blow that i can check.. and how do i check it...Ty for your help

 

[Haffiman]

Re: my 1986 jonhson outboard blowing ignition moduals?

Which engine?

 

[mikeandjill00]

Re: my 1986 jonhson outboard blowing ignition moduals?

1986 90 hp j90tlcdc Ty for your help

 

[Haffiman]

Re: my 1986 jonhson outboard blowing ignition moduals?

Which plugs are you using?
Were all ground connections clean?