Re: 4.3 LX Fuel Pump
 

Replace it, how do you have confidence in checking it?:confused:

Re: 4.3 LX Fuel Pump
 

I figure it's fine, because the only issue with the boat is cold starting. And a momentary loss of power when pushing the power up. Other than that it runs fine all day. If there was an issue with the fuel filter I would suspect there would be issues running the boat wide open which there isn't.

Re: 4.3 LX Fuel Pump
 

Napa sells a rebuild kit for around $40 and the only thing you would need is a gasket from the carb to manifold ($5). There are 2 filters where the fuel line meets the carb. 1 on each side that filter before it fills up the bowls. My filter on the opposite side of the fuel line was nasty! water also got in there and formed some rust on the primaries and secondaries. This kit (Napa 2-5763A) came with everything but the right gasket I stated above, even comes with the acc pump. It will save you about $100 or so.
Good Luck!

Re: 4.3 LX Fuel Pump
 

Ok, I should have tried this before ordering the carb kit, oh well. I took off the fuel line from the fuel pump and checked to see if any fuel was flowing from it when cranking the engine. Nothing is coming from the fuel pump while cranking. Took the electrical connector off the pump and cranked engine again. Shows about 9-10 volts at the connector. Tried connecting the fuel pump directly to the battery (with alligator clips) and a steady stream of gas comes out . Tried connecting the electrical plug for the fuel pump again and no fuel coming out. Still shows about 10 Volts at the connector though... So what are the chances there is something wrong with the electrical connector? Maybe it's not making a good contact with the connector on the pump itself.... Anyone?

Re: 4.3 LX Fuel Pump
 

You will have some voltage drop when cranking just from the drag of the starter. If the motor spins fine it could be a bad connection from the starter to the pump wire, a bad pump wire, or something internal to the starter solenoid. I would make sure all of the connections are clean. I don't think a 2 volt drop should be enough to prevent the pump from filling the carb though. These dang boats can be aggravating can't they. Let me know what you find out.
Happy Boating
Dan

Re: 4.3 LX Fuel Pump
 

When I get back home, I'll check to make sure all the connections are clean. I'm thinking it's the plug that goes into the pump that is the issue. Maybe it's not making good contact with the pins receptacles in the pump...