1989 Mercury 100 hp 2+2 system question.

J.avant

Seaman
Joined
Aug 15, 2009
Messages
54
Hello, Can the 2+2 system be bypassed?

I was checking out the fuel system diagram in the manual and looks like the 2+2 system works off of fuel pressure. So if that is right could you get two of the top carbs with the air mix screw and replace the two bottom carbs. Then you could block off the two injectors on cylinders #3 and #4. Then you wouldn't need the return line with the small fuel filter and the restrictor.
 

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,616
Re: 1989 Mercury 100 hp 2+2 system question.

Hello, Can the 2+2 system be bypassed?
Nope as its been tried and to many problems arise when its done such as idle,vibration and synchronization problems.
 

J.avant

Seaman
Joined
Aug 15, 2009
Messages
54
Re: 1989 Mercury 100 hp 2+2 system question.

Nope as its been tried and to many problems arise when its done such as idle,vibration and synchronization problems.

Well......sounded like a good idea anyway.LOL

Thanks
 
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