Updating fuel System
Thread Starter
|
New User
Joined: Sep 2020
Posts: 4
Likes: 0
Updating fuel System
Hey Guys New to the Site but long time gear head I have a 1986 F 150 I am redoing the Fuel system both Electrical and Fuel Lines. I am replacing that Blankety Blank Fuel Bowl tank selector with a new fuel tank selector valve, then I'm replacing the in tank pumps with new high pressure pumps has anyone don't this? I plan on running relays after the tank selector switch, any thoughts? comments on the idea? I upgraded to the Holley Sniper EFI and Hyper spark distributer kit.
New User
Joined: Sep 2020
Posts: 22
Likes: 0
I have replaced the in tank pumps with high pressure ones what is your question? I put an aem pump in my rear tank. I ended up getting rid of the front tank and just running a 38 gallon rear (f250 extended cab) I took the blue wire from the sniper's fuel pump relay and ran it down the frame rail to the selector then soldered it right to the wire that went to the rear tank. So the sniper is running the fuel pump not the original wiring in the truck. (I am not a fan of these trucks wiring). I imagine you could do the same but rather than bypass the selector use the blue wire to supply the common for the 2 fuel pumps. Just an idea.
Moderator
Joined: Jan 2001
Posts: 56,980
Likes: 2,735
From: Virginia
We had a interesting discussion a month or so ago, about how the old fuel injected systems in these trucks needed that fuel bowl reservoir because the tank and the tank pumps have no baffling to keep down fuel slosh. Something to think about when you are changing things around.
New User
Joined: Sep 2020
Posts: 22
Likes: 0
On that note I dont feel it's that big of an issue. For what my opinion is worth lol. I think with how much fuel your turning over with the hp pumps and a return fuel system air in the system whether in the reservoir or the line will behave the same way as far as pressure works. It would have to have a way to relive the air without relieving pressure otherwise would just fill up with air and shove it down your system anyways.
Edit: also a side note getting rid of the selector valve isnt new to efi I have helped do it on many efi ford and carbed ones without issue in the past and have done it to mine without any issues and alot of my trucks use is in the mountains were fuel would be sloshing alot. Also a side note that isn't what you asked anyway sorry for that.
Edit: also a side note getting rid of the selector valve isnt new to efi I have helped do it on many efi ford and carbed ones without issue in the past and have done it to mine without any issues and alot of my trucks use is in the mountains were fuel would be sloshing alot. Also a side note that isn't what you asked anyway sorry for that.
Thread
Thread Starter
Forum
Replies
Last Post
RA5226
1994.5 - 1997 7.3L Power Stroke Diesel
5
May 4, 2014 10:13 AM
MONAVIERONJON
1994.5 - 1997 7.3L Power Stroke Diesel
1
Jun 19, 2013 09:26 AM
