Adding a fuel pump and sump.

[Gee8100]

I am going to install a fuel pump along with a sump.
My question is has anyone used the factory draw straw for the return line for the air separator rather than cutting the filler tube and installing the tube in it.
When you have the sump installation the original draw tube is plugged off, just wondering if it could be used for the pumps bypass line.

 

[NC-smokinlmm]

I wouldn't do that. The pressure from the fuel in the tank could restrict the flow too much and cause problems. Plus, I wouldn't want the air/hot fuel dumped into the tank near the sump..

 

[clrussell]

My Lb7 is exactly like that. I've had no issues what so ever with it, and it's been like this since before I owned it

 

[Muff]

I am going to install a fuel pump along with a sump.
My question is has anyone used the factory draw straw for the return line for the air separator rather than cutting the filler tube and installing the tube in it.
When you have the sump installation the original draw tube is plugged off, just wondering if it could be used for the pumps bypass line.

Exactly how I do them. Clean and simple.

 

[Muff]

My Lb7 is exactly like that. I've had no issues what so ever with it, and it's been like this since before I owned it

Izzzzz sooooo niceeeee. Juzzzzzz look at it

 

[deezelpwr]

done the same on at least 6 trucks

 

[deezelpwr]

I am going to install a fuel pump along with a sump.
My question is has anyone used the factory draw straw for the return line for the air separator rather than cutting the filler tube and installing the tube in it.
When you have the sump installation the original draw tube is plugged off, just wondering if it could be used for the pumps bypass line.

Let me know if you need a hand, I live in summerdale

 

[Balindir]

It looks like you got your answer... but i too did it that way. I've had no issues at all. :thumb:

 

[Chevy1925]

I wouldn't do that. The pressure from the fuel in the tank could restrict the flow too much and cause problems. Plus, I wouldn't want the air/hot fuel dumped into the tank near the sump..

you realize that all returns on the dmax have a tube that run down into the factory sump and are under fuel 90% of the time, right? the purpose is so you do not draw air when running a low tank and helps keep the sump topped off. No matter where you place the return, its going to heat that tank up without a good cooler and you will be drawing in hot fuel. Not to mention the sloshing the tank sees, where it does dump will still get mixed is pretty damn fast

 

[02greysixer]

I am going to install a fuel pump along with a sump.
My question is has anyone used the factory draw straw for the return line for the air separator rather than cutting the filler tube and installing the tube in it.
When you have the sump installation the original draw tube is plugged off, just wondering if it could be used for the pumps bypass line.

That's the only way I'll do them as well. Makes for a super clean install.

Sent from my SM-G930P using Tapatalk

 

[DuramxMan]

Well may have to move mine, because cant fuel with truck running it keeps kicking the pump off!

 

[NC-smokinlmm]

you realize that all returns on the dmax have a tube that run down into the factory sump and are under fuel 90% of the time, right? the purpose is so you do not draw air when running a low tank and helps keep the sump topped off. No matter where you place the return, its going to heat that tank up without a good cooler and you will be drawing in hot fuel. Not to mention the sloshing the tank sees, where it does dump will still get mixed is pretty damn fast

It's been along time since I was in a fuel tank. Why wouldn't you just tap into the fuel return pre cooler. That's how I did all mine...

 

[Gee8100]

Thanks.

 

[Chevy1925]

It's been along time since I was in a fuel tank. Why wouldn't you just tap into the fuel return pre cooler. That's how I did all mine...

you can, just preference.

i dont care for sumps. they dont hold the fuel in the bowl well when you are playing off road on steep grades and have a low tank. the stock sump does much better and with the PPE pick up snapped in there, you get no "1/4 tank" issues, return keeps fuel in the sump, and it has trap doors to help keep fuel in and from sloshing out.

 

[Muff]

you can, just preference.

i dont care for sumps. they dont hold the fuel in the bowl well when you are playing off road on steep grades and have a low tank. the stock sump does much better and with the PPE pick up snapped in there, you get no "1/4 tank" issues, return keeps fuel in the sump, and it has trap doors to help keep fuel in and from sloshing out.

Nobody cares about your off-roading shenanigans James