4.3 MPI Plugs

[SteveRay]

Maybe it is me or the way the engine is mounted but I can't even see the plugs.....Anyone change these before????
How many hours before changing?

 

[zbnutcase]

Re: 4.3 MPI Plugs

The plugs are under the exhaust manifolds, and, like many boat engine repairs, are often done by feel, not sight.

 

[Bondo]

Re: 4.3 MPI Plugs

How many hours before changing?

Ayuh,.... I inspect mine each spring, 'n replace every few years, or when their corners are gone....