4.3l Mercruiser cold starting problems (HELP)

[Rhinodecals]

Re: 4.3l Mercruiser cold starting problems (HELP)

Ok installed the new pressure switch same thing will run for about 10 to 15 sec the dies. put the fuse link back in with the 15amp fuse and runs for about 3 to 4 mins then dies. I can restart the engine and it runs for about 3 to 4 mins then dies willstart back up every time. checked the new pressure switch with a volt meter and the switch is closing when the engine starts up.

 

[Rhinodecals]

I still some more help here with my boat

I still some more help here with my boat

1. Engine year 1998
2.electric choke
3. Mercarb carburetor
4. 2 barrel
5. Electric fuel pump
Ok installed the new pressure switch same thing will run for about 10 to 15 sec the dies. put the fuse link back in with the 15amp fuse and runs for about 3 to 4 mins then dies. I can restart the engine and it runs for about 3 to 4 mins then dies willstart back up every time. checked the new pressure switch with a volt meter and the switch is closing when the engine starts up.
I guess my question is this a bad fuel pump that it is only pumping in to the bowl on the carb but not pumping all the time?

 

[achris]

Re: I still some more help here with my boat

Re: I still some more help here with my boat

I recall there was an issue with the pump connector. (I'll try and dig up the SB)... In essence, the connector on the pump would vibrate loose... Have you looked at the pump connector? It may just need pushing down...

Chris.........

 

[Rhinodecals]

Re: I still some more help here with my boat

Re: I still some more help here with my boat

Chris
Are you talking about the two wire plug? I have a drawing of the fuel line it does not so the pump connector.
Here is the web link i am looking at http://www.mercurypartsexpress.com/us/parts-search.html#epc::mc449365mr1069ar2971

 

[achris]

Re: I still some more help here with my boat

Re: I still some more help here with my boat

Yep, the electrical connector, 2 wires....

 

[Rhinodecals]

Re: I still some more help here with my boat

Re: I still some more help here with my boat

Have checked the connection at the plug it is good there. Does it come loose at the fuel pump itself?

 

[Rhinodecals]

Re: I still some more help here with my boat

Re: I still some more help here with my boat

Found the problem the purple wire with a yellow strip. Was ground out on the starter. Thanks guys for all help