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    1978 850 Mercury 4369341 -Cee bee avenger

    My merc has a problem WOT. It fires right up and idels well. When I bought the boat ran pretty good. Sometimes the boat would start to die down so I would hold the electric choke down and the boat would run faster once more. But now my electronic choke does not work. Did I fry something...
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    wot boggs out- merc 850 serial # 4369341 what year is this please

    Wot my mere boggs out. I checked the fuel lines and rebuilt the carbs and fuel pump. Mechanic said exhaust sucking air causing air mixture to change? I don't know but he said the seal is bad on the lower crank causing this. What can I do?
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    sucking exhaust air causing to stall when full throttle,1978 merc 850

    I took the boat in to a mechanic and he said he fixed it but same problem. This is the story he gave me.OK the engine has a seal leak on the lower crank. Exhaust is coming out and sucking air causing the fuel mixture to be different. Thus causing the engine to stall at full throttle. So I...
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    ELECTRIC FUEL PUMP/Can I be sucking in air instead of fuel at top end?

    I have a problem with the 78 merc 850. The is no top end. What type of pump should I use. My motor run when my buddy presses the bulb. I've cleaned the carbs and put a new fuel diaphram in. I don't know what else to do? What are the floats? Can I be sucking in air instead of fuel at top...
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    fuel problems? 78 merc 85hp

    Would this problem affect the engine in open throttle and cause it to go slow? I have a problem with my 78 merc 85hp. The merc starts fine but when I put the throttle open it boggs out. I tool the boat in and the mechanic said the stator was bad so I replaced that. I told him to put it on the...
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    sucking air, lower crank seal has pinhole. 78 merc 85hp

    Would this problem affect the engine in open throttle and cause it to go slow? I have a problem with my 78 merc 85hp. The merc starts fine but when I put the throttle open it boggs out. I tool the boat in and the mechanic said the stator was bad so I replaced that. I told him to put it on the...
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    sucking air, lower crank seal has pinhole 78 merc 85hp

    Would this problem affect the engine in open throttle and cause it to go slow? check the one above. accident pressed enter
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    boat dies when open throttle 78 merc 85hp

    I have a 78 merc 850. When the boat is cold and I first open it up it goes for about 5 sec. then it suddenlys wants to die and I have to bring the throttle half way so it doesn't die. I got a diagnostic and they said it was the lower crank sill has a hole in it. Does this sound correct? They...
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