Fuel Problem
 

I was changing the water pump impeller on my 454 mag, which has the fuel pump that is mounted on the sea water pump. When i took the fuel line off the pump that runs to the carb no fuel came out. Should there be fuel in this line all the time or does it bleed off whent the motor is off?

I have been having problems starting the motor after is sits at the beach. Once started it will run fine but after i sit at the beach all day it takes a while to start.

Could the fuel pump need to be replaced. I have seen other posts that you can get a fuel pump from Autozone to replace, but wasnt sure how good those work with boats.
Thanks

It really should not bleed back since their is a one way check valve in there. And that would explain a hard start after sitting for a while. You really cant use an automotive starter because they do not have the port for the overflow line that runs to the intake. The boat would not be CG legal without it. But there are rebuild kits available for most of the pumps, which should have new valves in them.

Is the check valve in the fuel pump? I replaced the anti syphen vavle that is on the fuel tank.

The fuel pump has at least 1 inlet and one outlet valve, sometimes more. they keep the flow going from the tank to the carb-all one direction. If the fuel drains back out of the carb line then one or both valves are likely leaking some.

Thanks. I may just replace the fuel pump then go from there.

The pump from Autozone is a marine pump, made by Airtex, the OEM maker for Mercruiser. Details in my post here:
http://www.offshoreonly.com/forums/d...fuel-pump.html

[QUOTE=apollard;3135401]The pump from Autozone is a marine pump, made by Airtex, the OEM maker for Mercruiser. Details in my post here:
http://www.offshoreonly.com/forums/d...fuel-pump.html[/QUOTE

Wow, great find. Sorry I had not seen your post, that is a great deal. And I have black paint :drink:

I credit Google - they did the searching of other forums

apollard - are the fittings located in the same spot as the mercruiser pump

Yes, the ports are in the same locations. You'll need to remove the brass fittings from the old pump & install on the new one - same as the Merc part.