3 Fuel lines in engine bay -- evap can, carb fuel supply, what is the 3rd one?
Thread Starter
Supreme Member
iTrader: (8)
Joined: Sep 2004
Posts: 1,896
Likes: 0
From: Charles County, Maryland
Car: 2000 BMW M5
3 Fuel lines in engine bay -- evap can, carb fuel supply, what is the 3rd one?
Hi guys, still finishing up the V6 to V8 swap. There are 3 fuel hardlines up front -- one is attached to the center port on the evap canister, and there are 2 more -- one is 5/16", the other is 3/8". Which is fuel supply to the pump (I am running a mechanical pump on the 305), and what is the other line? I am being told by the previous owner that the 2 lines both went to the mechanical fuel pump on the 2.8 V6, that one was a return for the fuel cutoff. If this really is the case, I just cap off the return since I am using a regular old fashioned mechanical fuel pump, right? Which of the 2 lines is supply and which is return, the 5/16 or the 3/8?
Last edited by 327_TPI_77_Maro; Apr 6, 2006 at 01:42 PM.
Joined: Mar 2000
Posts: 43,187
Likes: 46
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The 3/8" is the supply, and the 5/16" is the return.
A Carter M6626 will use both. Helps avoid vapor lock with the tight confines of the 3rd gen underhood.
A Carter M6626 will use both. Helps avoid vapor lock with the tight confines of the 3rd gen underhood.
Thread
Thread Starter
Forum
Replies
Last Post
theshackle
Tech / General Engine
4
Mar 5, 2017 06:37 PM
AkDrifted
Engine/Drivetrain/Suspension Parts for Sale
6
Aug 17, 2015 07:45 PM
