Ls swap 04 LJ Fuel lines

M

mdbs14

Member
Hello family,

Ready to pull the tub off, and ran into this canister on rear corner passenger side with fuel like lines coming from it going to the engine bay. Having hard time disconnecting and dont wanna break anything yet. Never seen this on my tj. Are all these lines needed if I don't need emission inspection?

Thanks
 

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Mouse

Mouse

Trying to wheel
Supporting Member
Location
West Haven, UT
Its the evap system. The 03-06 have it in that location. If you're not worried about emissions, then it can be deleted. Still recommend being careful with the lines as the connectors break easily, especially as the plastic gets older
 
M

mdbs14

Member
Mouse said:
Its the evap system. The 03-06 have it in that location. If you're not worried about emissions, then it can be deleted. Still recommend being careful with the lines as the connectors break easily, especially as the plastic gets older
Click to expand...
yes, the connectors tabs are so dry they crack. what to block this with? or I can just leave the tube line that went to it
 

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Mouse

Mouse

Trying to wheel
Supporting Member
Location
West Haven, UT
Its possible to delete the tank and retain the full system functionality by simply replacing the evap tank with a hose. I've not deleted the whole system though. There is likely some impact to the emission controls as well. Maybe someone else has experience with it.
 
M

mdbs14

Member
Mouse said:
Its possible to delete the tank and retain the full system functionality by simply replacing the evap tank with a hose. I've not deleted the whole system though. There is likely some impact to the emission controls as well. Maybe someone else has experience with it.
Click to expand...
but the egr, and evap were deleted on the 5.3 motor am using. :thinking:
 
glockman

glockman

I hate Jeep trucks
Location
Pleasant Grove
The biggest advantage to leaving the charcoal tank is it will kill fumes coming from your fuel tank vent. Mine is still there with the lines hooked up but my ls has the evap disabled and no line ran to the fuel tank or charcoal canister for evap.
 
M

mdbs14

Member
@glockman I could not find the post related to the fuel setup in your posts.

My ls motor only have 1 fuel line at the fuel rail. Do I still need a return line in this case? I see some returned line that require drilling the return plug on the fuel filter housing.
Will this Novak kit work?
 

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glockman

glockman

I hate Jeep trucks
Location
Pleasant Grove
mdbs14 said:
@glockman I could not find the post related to the fuel setup in your posts.

My ls motor only have 1 fuel line at the fuel rail. Do I still need a return line in this case? I see some returned line that require drilling the return plug on the fuel filter housing.
Will this Novak kit work?
Click to expand...
I'm not sure. Maybe it was the 05 and 06 had return fuel systems. I simply connected the OEM fuel line to the ls fuel rail with AN fitting and braided hose.
 
M

mdbs14

Member
glockman said:
I'm not sure. Maybe it was the 05 and 06 had return fuel systems. I simply connected the OEM fuel line to the ls fuel rail with AN fitting and braided hose.
Click to expand...
After some reading, I think I will go with this set up, a regulator bypass from Novak with a return line integrated for $90, and a regulator/filter unit to the fuel rail.

With this regulator bypass unit, I don't need to drill into the fuel filter.
 

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glockman

glockman

I hate Jeep trucks
Location
Pleasant Grove
I don't think your Jeep has a return correct? If that is the case, just find a non return fuel rail for the LS. This pic shows my LS fuel rail only has one connection to the jeep, no return. This way you can just use the OEM fuel pump with the regulator in the pump. I don't remember what year the gen 3 LS when to return-less but it was after 04 which is what my motor is and I had to find the fuel rail at the junkyard.

1720461891316.png
 
M

mdbs14

Member
glockman said:
I don't think your Jeep has a return correct? If that is the case, just find a non return fuel rail for the LS. This pic shows my LS fuel rail only has one connection to the jeep, no return. This way you can just use the OEM fuel pump with the regulator in the pump. I don't remember what year the gen 3 LS when to return-less but it was after 04 which is what my motor is and I had to find the fuel rail at the junkyard.

View attachment 174416
Click to expand...
My LS motor has only that one fuel line at the rail. I think replacing the jeep regular with the regulator bypass with return line, and regulator/filter will do the job. something like this
 

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UNSTUCK

UNSTUCK

But stuck more often.
What year is your jeep? If it’s 05-06 you do not need the Novak kit and would be silly to install it. Not sure about 03-04. They might need it. If you must have that kit I have one sitting on my shelf I’ll sell for $50 plus a flat rate box. Brand new, never used, but has been on the shelf in its bag for years.
 
M

mdbs14

Member
UNSTUCK said:
What year is your jeep? If it’s 05-06 you do not need the Novak kit and would be silly to install it. Not sure about 03-04. They might need it. If you must have that kit I have one sitting on my shelf I’ll sell for $50 plus a flat rate box. Brand new, never used, but has been on the shelf in its bag for years.
Click to expand...
My LJ is 04, I read that the fuel tank and pump setup was changed in 05
 
UNSTUCK

UNSTUCK

But stuck more often.
It was changed. If you had a return line from your original fuel rail you will need to install the corvette regulator with return. Hook a line from that return to the return line on your frame rail. Done.
 
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