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Very good-with the exception of the oil sensor mounted on the engines-I have twins and they have failed to often.
The Mercury EFI outboards require a minimum octane rating of 87. Since the engine will operate on the lower octane fuel, it is a matter of personal preference.
weight of 1999 mercury 200 efi
Electronic Fuel Injection (EFI)
EFI stands for electronic fuel injection.
10 degrees BTDC ( with EFI / electronic fuel injection ) unless engine compartment decal shows different
475lbs
The 1997 model Mercury, 225 hp EFI uses a NGK BR8HS plug, gapped to .035 in.
Yes a 1998 mercury 200 efi outboard vapor can lock. Most of the time the issue can be traced back to the quality of fuel put into the engine that can cause the vapor to lock.
Electronic fuel injection
It depends on your skill level, what engine you are replacing with what engine, what vehicle you are removing from and putting in, tools, and how much time you have. Is it EFI or carb? Are you going from carb to EFI? Carb to EFI? It can take a day or it can take a year lol.