KanyT
15.05.2021 2:59:37
Re: Electric fuel pump instead of primer bulb on outboard more
See full version: Electric fuel pump instead of primer bulb on outboard
Re: Electric fuel pump instead of primer bulb on outboard more
The engine runs fine once it's started.
Already replaced all the lines between the fuel tank and the carb, installed new connectors from the fuel tanks to the engine quick disconnect. Engine starts in 1/2 crank when warm, have installed electric choke that does everything the manual choke does. And, as I said, I've replaced the primer bulb a couple times.
The issue seems to be fuel not getting to the carb after it's been sitting for anything over 30 minutes.
What can go wrong.
2 check valves in the fuel pump
2 check valves in the primer bulb
anti-siphon valve in fuel tank
pickup tube in the fuel tank.
All the clamps and fittings between the engine and the fuel tank.
Merc say's you can run a 2lb pusher style pump from the tank to the engine and eliminate the bulb. However, you can only do that with an above deck tank because the pump has to be level or below the bottom of the tank for it to work correctly. With a built in tank that would put the pump in the bilge and the USCG frowns on that. All below deck tanks have the outlets on the top and should have anti-siphon check valves (except diesel) so that they do not drain into the bilge. The alternative is to run a 2lb pusher pump into an above deck surge tank and then push fuel from it to the engine and remove the engines puller style fuel pump. That works excellent and is safe but the cost is a lot more and it's rarely seen or needed in a recreational application. here
Meet or exceed OEM performance and durability more
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