EFI to Carburetor
#1
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EFI to Carburetor
I have a 1994 Mercruiser 454 magnum MCM EFI 385 hp that \i would like to convert to a carburetor. If it had a newer efi system I wouldn't even consider switching but it has been one thing after another. I think the ECM may be toast now. The boat sat for 9 years and was not properly winterized. I have put in a rebuilt base engine but cannot get it to run right. What is involved in switching to a carburetor ? Intake, carb, distributor, fuel pump ? Are there kits available ? Any help would be greatly appreciated.
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Mercedes450slc (06-25-2020)
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Mercedes450slc (06-25-2020)
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I have a 1994 Mercruiser 454 magnum MCM EFI 385 hp that \i would like to convert to a carburetor. If it had a newer efi system I wouldn't even consider switching but it has been one thing after another. I think the ECM may be toast now. The boat sat for 9 years and was not properly winterized. I have put in a rebuilt base engine but cannot get it to run right. What is involved in switching to a carburetor ? Intake, carb, distributor, fuel pump ? Are there kits available ? Any help would be greatly appreciated.
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SB (06-26-2020)
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I fid the 502MPI to carb. Used the EST distributor from the MPI. Being a Gen V the MPI had the sea water pump mounted mechanical pump, which I used. Removed vst electric pump set up of coarse. Luckily the dist had the module with advance curve they use in the Voyager Ignitions. If yours doesn’t do advance, you can swap in a module that does. We have noted these modules in the past on OSO and other places.