6.7 CP3 fuel connection identification?

[GOT-Torque]

Here's a pic of a 6.7 cp3. I need to identify what the three fuel connections are for. I will be installing an Airdog on this truck (03 dually) with the 6.7 engine. The stock fuel filter setup will be going away...

I "think" that:

(sorry I messed up my numbers the first time)

#3 is the fuel inlet

#2 is ???? (this goes to the side of the fuel filter assembly then up to the rail with hard line).

#1 is the high pressure feed to the rail (hard line).

 

[jlibert]

I'll take a guess...

1 --high pressure
2 --return
3 --low pressure inlet

 

[homewrecker]

1 high pressure line to the rail
2 fuel return(to tank)
3 fuel supply( from lift pump).

Edit ^^^^^ beat me to it! Just put one on a 5.9 the other day

 

[GOT-Torque]

isn't this different from a 5.9 cp3? I was thinking they only had two connections? maybe I'm wrong...

 

[homewrecker]

Fuel return is the same.Fuel supply on a 5.9 is on the top of the front cover vs the back on the 6.7. The high pressure outlet is in the same spot,it just sticks back about a 1/4" further on the 6.7

 

[GOT-Torque]

so to ditch the fuel filter setup, I need to fab something up to bolt the hard lines to or ditch the hard lines altogether right?

 

[JOESHTRDDSL]

You have to connect the hard lines on both sides of the stock fuel filter housing together so the returns will still function. The GDP one I used to delete the stock filter canister was just a straight through fitting that the stock banjo's screw into and a braket to secure it to the block.

Joe