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#1
posted to rec.boats
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Fuel pump died - Seawater Pump Removal
Hi. Recently I found a fair amount of grease/oil (odorless) that looks
like it was sprayed out from the pulley of my seawater pump (92 merc 454 bravo one). Now my fuel pump is not pumping. I'm figuring I blew the bearing in the seawater pump and burnt out the cam driving the fuel pump. Sound right? Any chance it could be something less dramatic like just the fuel pump or a gasket? I am going to pull the fuel pump and check it out so I guess I really won't know until then, I'm just wondering if anyone has had this, I can't find as much as I'd like on it. Assuming the seawater pump needs to be removed how much water will come out of the intake hose to the pump when I pull it? I'll have to do it on my mooring. What's the best thing to plug it with if the water keeps coming? I don't have a cut off or seacock that I can find. My only concern over the project is spraying salt water all over the place. Thanks for any thoughts. |
#3
posted to rec.boats
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Fuel pump died - Seawater Pump Removal
I don't have a cut off or seacock that I can find.
What sort of boat is this that it doesn't have a cut-off for the raw water intake? Yeesh, that's crazy. Also consider an electric fuel pump. If the replacement of the mechanical one is prohibitively expensive (or difficult) you may be able to get by with an electric one. If only until you get the boat out of the water so you can replace the mechanical one properly. If you can find out the proper flow rate you ought to be able to use an automotive electric fuel pump to handle it. -Bill Kearney |
#4
posted to rec.boats
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Fuel pump died - Seawater Pump Removal
"Bill Kearney" wrote in message t... I don't have a cut off or seacock that I can find. What sort of boat is this that it doesn't have a cut-off for the raw water intake? Yeesh, that's crazy. Also consider an electric fuel pump. If the replacement of the mechanical one is prohibitively expensive (or difficult) you may be able to get by with an electric one. If only until you get the boat out of the water so you can replace the mechanical one properly. If you can find out the proper flow rate you ought to be able to use an automotive electric fuel pump to handle it. -Bill Kearney And there are inline pressure regulators for fuel lines. |
#5
posted to rec.boats
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Fuel pump died - Seawater Pump Removal
The replacement fuel pump is a regular chevy marine fuel pump. It is
just mounted on the raw water pump instead of the engine block because chevy quit making the block with a place for a mechanical fuel pump. So the raw water pump has a small cam on it's shaft and a mount for a fuel pump. On most installations the raw water pump is even pretty close to the location on the block where the fuel pump used to mount. Mechanical pumps have a simple safety factor. Engine stops, fuel pump stops. Works everytime. Bill Kearney wrote: I don't have a cut off or seacock that I can find. What sort of boat is this that it doesn't have a cut-off for the raw water intake? Yeesh, that's crazy. Also consider an electric fuel pump. If the replacement of the mechanical one is prohibitively expensive (or difficult) you may be able to get by with an electric one. If only until you get the boat out of the water so you can replace the mechanical one properly. If you can find out the proper flow rate you ought to be able to use an automotive electric fuel pump to handle it. -Bill Kearney |
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