fogging a mercruiser 4.3mpi

hello brand new to site. I have a 2014 mercruiser 4.3 mpi. it is way different from the 93 I had. my 93 was a 4 barrel that I fogged right into the carb. my new boat'a injection (carb?) looks different and there is nothing in my owner's manual regarding this. I appreciate any help on this.

Actually, we do not "fog" an MPI engine.... at least not in the conventional sense of "fogging".
What you'll be doing...... is introducing an oil enriched fuel mixture into the system.

Instead of using an external fuel tank, some will empty the OEM filter cartridge, and will replace the fuel in the cartridge with an oil enriched mixture.
Replace the cartridge.
Then operate the engine for a short duration as you normally would, allowing this mixture into the system.
IMO, this is not fogging (although Merc calls it fogging!) :rolleyes:


In theory, we could actually fog an MPI or FI engine (in the conventional method) if we could ensure that the solution did not enter any of the air sensors.



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Thank you for the link! Much appreciated.

Thank you very much. Just didn't look like my old 4.3 LX. I will do that. I appreciate your help!