scoflaw
Well-Known Member
- Aug 10, 2011
- 6,395
- Boat Info
- 1999 Powerquest legend 260 sx 502 mag
2005 Baja 242 islander 496
- Engines
- 502 mpi Bravo 1
496 mag B1
When I lost 1 bank every other plug in the firing order looked black and the other 4 were normal, so not your problem if all 8 are carbon fouled. I had a broken electrical connection on 1 injector.