Enricher Question?

[Plank]

Own a 1974 85hp Merc. Enrichers do not work. Solonoid works but no fuel is getting into throat. The carb body does not have a plunger like other carbs i have seen. It has a vacuum like system.

 

[Trent]

Re: Enricher Question?

Have you checked for restriction inside the lines?

 

[lightbuilder]

Re: Enricher Question?

Remove the fuel line before the carb, but after the fuel pump. Put the line from the pump into a jar and crank the engine over, fuel should come out. If it does remove the carbs and rebuild, if it doesn't check the pump. Good luck.

 

[Plank]

Re: Enricher Question?

I am assuming that the fuel pump is working because after it does start it runs fine. The problem is that it starts very hard. Thats what got me started with the enrichers in the first place. Because you cant see fuel being pumped into the throat of the carb when activated, i am assuming that they are not working. The manual i have says nothing about this type of enriching system. Any help would be great. Thanks

 

[lightbuilder]

Re: Enricher Question?

Are you squeezing the primer bulb first. As far as the solinoid on the carberator goes it is used to restict the amount of air entering the caberator therfore enriching the mixture (air fuel).

 

[hondon]

Re: Enricher Question?

The manual does'nt say anything about enrichment systems because the only enrichment system you have is the electric choke.Unless this is some space age experimental hybird, you don't have automatic jack.Push in the key switch, look for a toggle that says choke.Might help.

 

[Plank]

Re: Enricher Question?

There are no choke plates on these carbs. What it does have is a solonoid hooked up to the two carbs that turns a round tube looking valve. When the valve is turned 1/4 turn, two holes in the tube line up with two holes in the carb body. The holes in the carb body go from the carb bowl to the throat of the carb where it mounts on the intake manifold. Has anyone seen one of these systems? Does anyone know how to test? From what i see, even if it is working, because of where the fuel enters the throat of the carb you would not be able to see it working. Thanks

 

[Rock Man]

Re: Enricher Question?

Hey Planks! I just tested all kinds of **** on my 90 hp merc. and the enrichner was one of them... Now mine might be differnt then yours... so take this to what ever you can use... Turn switch to on position, push in on key or activate enrichner, if the valve opens you should hear it click, if not don't panic! because there is another test, if no click obtain a volt meter, set scale to 12VDC scale, place black lead to powerhead ground, and red lead to the enrichner wire running to the terminal block on the powerhead.(my wire was yellow & black) if the meter regesters 12V, and you don't hear it click, then it's probally your enrichner. GOOD LUCK! Bro! and hope this could help!

 

[Rock Man]

Re: Enricher Question?

stay with hondon, he's a big help!

 

[Plank]

Re: Enricher Question?

Thanks for the thought Rock Man. The enricher solonoid is working fine. It is moving the arm that moves the valves on the two carbs. Its after that that i am having a problem. Hey by the way what year is your Merc, and does your enricher pump fuel or just activate these valves i talked about earlier.

 

[ODDD1]

Re: Enricher Question?

Planks, these enricheners will not 'shoot' fuel into the carb throats.....they suck fuel in when the engine is cranking, they rely on vacuum behind the throttle plate to work correctly. Now, if the throttle plates are open at all when cranking you are not getting any vacuum, and no fuel......

 

[chumbucket]

Re: Enricher Question?

Planks where you at in jersey

 

[Plank]

Re: Enricher Question?

chumbucket: I live in Atlantic County.<br />ODDD1: Is there any way of testing this vacuum system to see if it is working correctly? Do you know the starting procedure for this engine? It seems odd to me to leave the throttle closed to start a cold engine. Thanks for your help.

 

[chumbucket]

Re: Enricher Question?

Oddd1 working on my evinrude now, but saw you pop on forum , you being the merc guru, i will be working on my 82 150v6 merc after evinrude , when i put new fuel hose's on would it be good idea to go ahead change bleed hose's to?? preventive maint. thanks

 

[Rock Man]

Re: Enricher Question?

My beast is a 1986 and works like ODDD1 explained...

 

[ODDD1]

Re: Enricher Question?

Planks: yes you can test system for proper operation...start engine [yeah, you said it was hard] after a minute or so of warmup with engine at idle, push in the choke...the motor should slow down and stall from additional fuel ....if nothing changes, then you have a problem...<br /> the reason I mentioned this in the first place is its the MOST common reason for hard starting...not the motors fault, its operator error....the throttle plates need to remain closed on your engine until AFTER it fires...then you can rev it all you want...this is a very specific thing...even rockmans motor is different, his primer actually drains fuel out of the top carb into the lower 4 cylinders...throttle plate position is not as critical to him...<br />chumbucket [love that name]..if those lines are 7-8 years old then change them...if you are gonna take em off check the check valves they attach to by the carbs...should be able to suck out but not blow back in....fittings on the cylinders are just fittings, no checkvalves....

 

[Plank]

Re: Enricher Question?

ODDD1: Checked out what you suggested and you were right. Operator error, not the engine at fault. Thanks for all your help.