Fuel Pump Questions
Thread Starter
|
Elder User
Joined: Dec 2003
Posts: 586
Likes: 0
From: East Palestine, Ohio
Fuel Pump Questions
I put a new mechanical fuel pump on the truck about a month ago. Wife and I was out for a ride today and the new pump quit. The pump is made by Carter that I purchased from summit racing. These are cheap pumps ($27.00). My question is should I replace with same brand or should I go the extra money and buy a Holley mech. pump or should I go with an in-line electric pump. If I go with an electric pump what would you guys recommend? I have mounted the gas tank under the bed and the has an early 302 with a Holley 2 barrel carb.
Thanks
Thanks
Fleet Mechanic
Joined: Aug 2010
Posts: 1,994
Likes: 3
From: Morgan Hill, CA
I am a fan of the electric fuel pumps. I have found that they work better as a pusher systems rather than a suction system. That means that you should install the pump as close to the tank as possible and as low as possible (hopefully at the height of the lowest that your fuel level can be.
Also....I use a filter before and after the electric pump. The inlet filter protects the pump from debris in you gas tank. The outlet filter protects your carb should the pump fail.
That carter pump should have lasted longer. Did it get dirt/rust particles in it from your tank? Most of the rear mounted tanks are new enough so that rust isn't much of a problem.
You can also run both...the electric pump as a backup. The nice part about that is that you can use it to prime the mechanical pump. If the truck ever sits around for a few days, you won't have to crank it for a long time to draw fuel up to the carb.
Dan
Also....I use a filter before and after the electric pump. The inlet filter protects the pump from debris in you gas tank. The outlet filter protects your carb should the pump fail.
That carter pump should have lasted longer. Did it get dirt/rust particles in it from your tank? Most of the rear mounted tanks are new enough so that rust isn't much of a problem.
You can also run both...the electric pump as a backup. The nice part about that is that you can use it to prime the mechanical pump. If the truck ever sits around for a few days, you won't have to crank it for a long time to draw fuel up to the carb.
Dan
Fleet Owner
Joined: Jul 2004
Posts: 27,291
Likes: 1,055
From: NM
Are the lines also new? They are the low point of a stock system, and debris collects there. I also recommend electric, with a Holley regulator.
But it would be useful to open up the Carter and see if the diaphragm tore, or it just has dirt in the check valves.
But it would be useful to open up the Carter and see if the diaphragm tore, or it just has dirt in the check valves.
Elder User
Joined: Jun 2015
Posts: 791
Likes: 11
From: Louisville
It's entirely possible you have a defective pump. If it had happened with two or more pumps I'd be looking for other issues. You could try checking the inlet side of the pump with a vacuum gauge when it quits pumping to make certain you don't have an obstruction or an intake leak.
Lead Driver
Joined: Dec 2012
Posts: 9,714
Likes: 823
From: Wentzville, MO
Terry,
I'd contact Summit. I would think they would make good on your pump and if not you'll alert them to a possible manufacturer issue. I'm wondering if the pump has to suck too hard as it was built to draw fuel from under or in the cab.
Keep us informed on your solution as many of us have under the bed mounted tanks.
I'd contact Summit. I would think they would make good on your pump and if not you'll alert them to a possible manufacturer issue. I'm wondering if the pump has to suck too hard as it was built to draw fuel from under or in the cab.
Keep us informed on your solution as many of us have under the bed mounted tanks.
Trending Topics
Thread Starter
|
Elder User
Joined: Dec 2003
Posts: 586
Likes: 0
From: East Palestine, Ohio
I think the carter pump is not able to suck gas from tank instead of original gravity feed. This pump has a flow rate of 25 GPH. The Holley pump I am looking at has a flow rate of 80 GPH. I am going to try this for now and see how it works. If that don't work then I will go with an electric pump.
Thanks
Thanks
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Believe Nothing
Joined: Jun 2004
Posts: 7,514
Likes: 398
From: W. Central FL.
Mechanical fuel pumps are easy to bench check or hand check. Use your fingers to simulate valves. If the suction side is working, it will hold onto your finger pretty tightly. If the discharge side is working, it will blow the finger away from the discharge port. Place the handle in a vice if you have it and move the body of the pump.
Logistics Pro
Joined: Nov 2006
Posts: 3,671
Likes: 367
From: Fallon,NV & Bainbridge OH
Those pumps pulled fuel just fine from below the trunk rear mounted tanks on full size Fords. You either have a defective pump, sucked up something into the pump (teflon tape, thread sealer, etc..., I know you have a new tank), a tank pick-up issue, fuel line or an eccentric issue.
Good luck on getting it going.
Good luck on getting it going.
Logistics Pro
Joined: Nov 2011
Posts: 4,685
Likes: 80
From: Northville, MI
I put a new mechanical fuel pump on the truck about a month ago. Wife and I was out for a ride today and the new pump quit. The pump is made by Carter that I purchased from summit racing. These are cheap pumps ($27.00). My question is should I replace with same brand or should I go the extra money and buy a Holley mech. pump or should I go with an in-line electric pump. If I go with an electric pump what would you guys recommend? I have mounted the gas tank under the bed and the has an early 302 with a Holley 2 barrel carb.
Thanks
Thanks
).I like mechanical pumps as if the engine stops it stops vs electric pumps that can keep pumping fuel when they shouldn't. Rapid oxidation can ensue
Thread Starter
|
Elder User
Joined: Dec 2003
Posts: 586
Likes: 0
From: East Palestine, Ohio
I think the pump is bad. I bench tested the pump and could not feel any suction at all. When I took the line off the pump from the tank there was no fuel in the line. Replaced with a Holley pump and truck fired right up. If it happens again then I will go with an electric pump.
Thanks everyone for your help.
Thanks everyone for your help.
Believe Nothing
Joined: Jun 2004
Posts: 7,514
Likes: 398
From: W. Central FL.
That is all the pump does, suck gas from the tank and push it to the carburetor. Thanks for the resolve.
Thread
Thread Starter
Forum
Replies
Last Post
john smith jr
1948 - 1956 F1, F100 & Larger F-Series Trucks
35
Aug 28, 2010 01:14 PM
735.0Short
1973 - 1979 F-100 & Larger F-Series Trucks
31
Nov 13, 2005 10:42 PM
Southern_Bronco
1967 - 1972 F-100 & Larger F-Series Trucks
3
Nov 24, 2004 08:13 PM