What's going on in the FPR manifold? It looks like the two fuel lines coming out of the head join, and go threw the FPR then threw a screen into a bowl. This bowl also has a tube coming in from the bottom. That tube comes from the fuel line exiting the fuel filter canister. After leaving the bowl the fuel travels by a screen thats covers a passage back to the fuel filter canister. Finally the fuel exits the FPR manifold where the return line to the tank connects.

Questions? What is the reason for the tube that connects the fuel exiting the fuel filter canister and the bowl on the FPR manifold? Why is there a passage connecting the top of the fuel filter canister with the fuel exiting the FPR manifold? I'm assuming they're both for bleeding air??


I'm re-plumbing my fuel system to run WVO. I want to use the stock fuel filter canister for diesel only. Install a second filter for the WVO. I want to use the stock FPR for both fuels without mixing the fuels where the FPR and the fuel filter canister meet. I'm thinking just plug the holes, but don't want to loose the OEM air separator. Any ideas?

 

aftermarket air separator?
I have not seen the inside of the FPR or pump, so i cant say much.
Good luck!

 

Maybe this helps you to understand that:


Here is the link to bigger diagram
http://rides.webshots.com/album/557359526fsiWdp

 

You da man Jose. I tried to rep ya but.....

 

Took care of the reps
nice diagram!

 

Thank Jim.

Thanks to you too.

 

Gotchya on the reps.

 

Mercy bocu, bro.

 

I was reading in Diesel World mag. and they where doing a regular bypass and said this would make some more power has anybody tried this? does it even work on our trucks or just the sd's?

 

Thats what I was thinking.

RÖENTGEEP, thanks for the diagram. That showed me that the fuel lines join in the manifold before they get to the fuel preasure test port, and them go threw the regulator. I don't plan on using the SD fuel pump. I'm going to use the stock two stage pump and move the valves up to the valley of flaming death. Plugging the air bleed ports from the FPR should keep the fuels from mixing. Then I'll just have to find an after market air separator.

 

Glad to hear that it helped you.