1988 3.0 Murcruisor Carburetor?

Question

When we where cruising on the lake the other day the boat started bogging down and going about 10mph. Sounds like the carb is sucking air. Spayed some carb cleaner and changed the plugs for good sake but still having the same issue. ANY ideas. Thanks

Answer 1

Not much info to go on, do you have a water seperating filter? if so, check for water in the fuel.  If not, get one.  Can you give a bit more detail?

Answer 2

Check fuel system and ignition system.  Carburation and timing work very closely with one another.  If you are running a thunderbolt electronic iginition --it could the ignition control module.

Ignition System:

Points,

Condenser,

Coil,

Fuel filter

Fuel lines