Boogracing
Recruit
- Joined
- Jun 27, 2022
- Messages
- 4
I'm having same issue here with a 88 mercury xr4 black max 150hp. All of a sudden have lost spark, if I disconnect these 2 wires and get spark back can I leave them undone? Thank you.Re: 1989 Mercury Blackmax 150 no spark
Have you tried disconnecting the black/yellow wire on both switch boxes?