Electric Diesel bleed pump advice...

[camaraderie]

Read the WARRANTY on the after market pumps. They all specify AFTER the racor since grit and grime can clog and disable the pumps. Ask me how I learned this!

[Hud3]

AFTER the Racor!

Why? 'Cause that's the way Island Packet installed it at the factory, and I trust that they know what they're doing. Think about it... the first thing the crud in the fuel should see after it leaves the tank is your primary filter.

The pump works fine pulling through the Racor filter. I don't bother filling the bowl--just turn on the pump and after 20 or 30 seconds, I can hear the pump slow down and know the air is out of the system.

[Chief Engineer]

You mean that the fuel is to the top of the filter when you open it up to change it?

[Hud3]

Yes, full up.

[edward]

Originally Posted by Hud3

Yes, full up.

So....the electric pump is just for pumping fuel thru the filters and is not switched on while the engine is running

[svspirited]

It should be after, Racors require a vacuum to operate correctly. In fact they specifically say if your tank is higher than your filters you need a valve between the tank and filters to reduce head pressure.

[thuss]

I could use this groups help to figure out how to bleed the air out of my racor with an electric pump installed after the racor (which is the setup my boat came with). There's a valve to route the fuel to the electric bleed pump (photo attached) and when I open it and run the pump it's able to fill a filter about halfway.

However, the racor is above the fuel tank so gravity isn't going to work in my favor and running the pump only fills the filters about halfway but it won't fill them all the way. I assume because once they get about half full the suction from the electric pump gets a steady flow of fuel so it's not able to get at the remaining air in the filter.

Anyhow, if anyone has any idea how to completely fill the filter with an electric pump installed after the racor that's mounted above the fuel tank level it'd be greatly appreciated. I haven't come up with any solution myself.

Thanks!