Fuel Lines
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Teching In
Joined: Oct 2005
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Fuel Lines Guys
Did I read that GM stopped useing two fuel lines after 98? I thought my motor was a 99, I pulled it from the car,but,it has two fuel lines at the engine. This being the case, is the fuel regulator at the fuel rails? So,if I am useing a in line pump, I can go from the pump to the fuel rails and use the return off the rails to get the fuel back to the tank. What in-line pump are most of you useing?
Thanks,David
Did I read that GM stopped useing two fuel lines after 98? I thought my motor was a 99, I pulled it from the car,but,it has two fuel lines at the engine. This being the case, is the fuel regulator at the fuel rails? So,if I am useing a in line pump, I can go from the pump to the fuel rails and use the return off the rails to get the fuel back to the tank. What in-line pump are most of you useing?
Thanks,David
Joined: Sep 2004
Posts: 3,148
Likes: 12
From: Downers Grove, IL
GM used dual line rails in 97-98 on vettes and from 99 to ??? on the trucks. F-Bodys always had single line rails and I believe GTO`s and caddys were always single line too.
If you have a dual line rail then the regulator is on the rail and you can plumb the pump direct to the rail and then the return port of the rail back to the tank.
I`m using an internal pump, so I can`t really help with this ?
If you have a dual line rail then the regulator is on the rail and you can plumb the pump direct to the rail and then the return port of the rail back to the tank.
I`m using an internal pump, so I can`t really help with this ?
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Hey guys, I have the same question, but for a b-body ss impala. There are two fuel lines going to the manifold. I am not sure which is either a vent line or the fuel line. With that being said, when I add my FAST fuel rails&injectors on my LS1, which fuel line (the 2 lines on the vehicle) do I hook up to supply fuel to the motor on the new rails?
Joined: Sep 2004
Posts: 3,148
Likes: 12
From: Downers Grove, IL
Originally Posted by Fisheron442
Hey guys, I have the same question, but for a b-body ss impala. There are two fuel lines going to the manifold. I am not sure which is either a vent line or the fuel line. With that being said, when I add my FAST fuel rails&injectors on my LS1, which fuel line (the 2 lines on the vehicle) do I hook up to supply fuel to the motor on the new rails?
Both, the larger 3/8" line on the car is the supply line and the smaller line is the return. You will need to put a fuel pressure regulator in so that you can regulate the fuel pressure.