Recent content by Merc40fisher

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    40 merc draining oil reservor into block

    hey guys, my 2005 40 HP 2cycle 3 cyl. keeps bleeding the oil from the tank into the block. itll drain a full tank of oil in a week or so. it'll start draining out the prop and all over the lower unit so I know its going directly into the block, spark plugs are good, carbs are clean. only thing I...
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    check valve draining oil tank on mercury 40.. I think

    hey guys. I have a 2005 mercury 40 3 cylinder 2 stroke. Serial # 1B033613. When parked for a while my oil talk will drain completely dry into the motor and comes out everywhere. Iv read a lot on the check valves to prevent this but am unsure if I have the right one or if this will fix the...
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    go up 1" on pitch? or cup my prop?

    hey guys, I have a flat bottom aluminum boat(16x48), welded in aluminum front and back deck and small console for steering wheel and controls. My motor is a 2005 mercury 40 3cyl, 2 stroke. I have a stainless 12 pitch prop that came with the motor thats been on there since 05. My RPM at max speed...
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    04 40hp electrical problem... I think...

    Hey guys, ok here we go. I have an 04 mercury 40Hp 2stroke 3cyl that I believe loses a cylinder in rough water. Iv changed all fuel lines, rebuilt carbs and pump, even ran different fuel tank and fuel primer bulb to make sure it was not a fuel system problem. But when getting into a light chop...
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    04 merc 3 cylinder, 2 cycle upgrades...

    Hey guys, I know this has been beaten to the ground more times then we can count, but I know for a fact it's possible. I have a 2004 mercury 40HP 3 cylinder 2 cycle. Model #1043412DD, serial #1B033613. Now to clarify, I am NOT trying to convert to a 50 or 60HP, so please don't tell me it's not...
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    40 Mercury no acceleration. Boggs in rough water

    Hey guys, I have a 2004 40HP mercury 2 stroke 3 cylinder. It was my grandpas old motor that he's taken out literally 7-10 times. It's been sitting since 2010 so I changed all fuel lines in boat and motor, cleaned all the carbs and changed fuel filter and spark plugs. But after all that it has no...
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