Good day to all,
I have a 1999 260 Sundancer with a single Mercruiser 7.4L MPI/ Bravo 3 that is fouling up four spark plugs. The cylinders that are showing fouled spark plugs are #s 2,4,6 and 8.
The fouled spark plugs all look the same (matte black with very minimal oil residue).
The odd...