FASS/AirDog install: Fuel return lines?!?!?! 3rd gen

[JasonCzerak]

Ok, looking at all these setup diagrams. I have yet to just fully look over my truck with instructions in hand, but I have a few questions!.



If I remove the canister, what do I do with the return lines?!?!?! I can't find docs that show this? The CP3 return line (cooling line) and the line from behind the head, and hte relief valve return line? What about fuel pressure gauge (tho, a T-fitting would work... )



If I use the stock canister, things should be cool as far as return lines, just need to know what mounting parts I need to connect it to the canister. the factory LP was replaced with an intake by DC a while back, so I just have lines... .

 

[jp8819]

On my airdog i just plumbed it to the vp44 and installed a T about a foot up the line to install fuel pressure guage. The factory return lines come of the pump not the filter so no need to worry about those they still work as normal if im not mistaken.

 

[JasonCzerak]

On my airdog i just plumbed it to the vp44 and installed a T about a foot up the line to install fuel pressure guage. The factory return lines come of the pump not the filter so no need to worry about those they still work as normal if im not mistaken.

Not the CP3 here. There is the return line from the CP3 that joins with the return from the rail relief vavle. then there's on more from the back of the head that runs to the canister. . In the back of the canister is the tank return.



What i'm seeing here is that the fitting that is suppose to go directly to the CP3, that will be put in place on the canister inlet. nothing else will be touches fuel system wise on the front of the motor.



I suppose if you cap off the hole when you remove the inlet line to the CP3, you can leave the canister alone and be all set as extra will flow back via stock lines. If you remove the canister, you have to get a 4-way fitting and connect all the lines



Back to more research and then it's time to start plugging away.

 

[steved]

I left my canister in place for that exact reason...



I figure someone else has figured it out, but I decided to leave the OE pump and filter there as a redundant system...



steved

 

[jp8819]

sounds like yours is alot diffrent than a vp truck never looked very hard at one of those. sorry I couldnt help

 

[bcpalmer]

Try this from Glacier to eliminate the stock filter housing:



Glacier Diesel Power - Product Detail



or this part to connect to filter housing:



Glacier Diesel Power - Product Detail