Fuel Pump Help Please
Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
Get ride of that POS pump, it's junk!
That is the same pump one of the classes of cars I work on is required to run, they are JUNK! I have seen more than one race lost do to it's failure.
I highly suggest going to the factory manual diaphragm pump.
-Enjoy
fh : )_~
That is the same pump one of the classes of cars I work on is required to run, they are JUNK! I have seen more than one race lost do to it's failure.
I highly suggest going to the factory manual diaphragm pump.
-Enjoy
fh : )_~
Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
I whole heartily agree!
-Enjoy
fh : )_~
Thread Starter
|
Junior User
Joined: Jun 2007
Posts: 67
Likes: 0
Machanical Pump Install
So I bought the Mechanical pump and went to install..... uh, feel like an idiot, I can't find where it goes. This truck has always had a electrical fuel pump since I owned it. Back by the tank.
1980 F100 300-6
I always assumed an its got an original motor...
There seems to be a spot low on the block where it might go, there's 2 semi-holes and an oval like flat spot, like it was part of the mold for some models...?
Anyone shed some light on this for me?
Ya, look @ this pic, that is where the flat spot is on mine, cept - no hole for pump, What gives?
1980 F100 300-6
I always assumed an its got an original motor...
There seems to be a spot low on the block where it might go, there's 2 semi-holes and an oval like flat spot, like it was part of the mold for some models...?
Anyone shed some light on this for me?
Ya, look @ this pic, that is where the flat spot is on mine, cept - no hole for pump, What gives?
Last edited by dvideo22; Jul 3, 2010 at 10:21 AM. Reason: found pic
Post Fiend
Joined: Nov 2005
Posts: 7,437
Likes: 4
From: Charles Town, W bygod Va
Sounds like someone swapped in a engine from a FI truck and converted it to carb, so you're gonna need an electric pump. I have no personal experience with them but have heard the Holley blue pumps are good.
Post Fiend
Joined: Dec 2007
Posts: 8,521
Likes: 16
From: Lost
Well, if that spot on your engine doesn't have the hole for the fuel pump arm to go into, you have a later model engine that had EFI originally.
In that situation, your only route is to go with an electric pump.
Unfortunately, most of the stuff sold at the big chain parts suppliers is cheap crap, that won't last very long. You've already encountered that. You may need to bite the bullet, and pay a bit more for a higher quality pump. Using a return style pressure regulator, and plumbing in a return fuel line should extend the life of the pricier pumps.
In that situation, your only route is to go with an electric pump.
Unfortunately, most of the stuff sold at the big chain parts suppliers is cheap crap, that won't last very long. You've already encountered that. You may need to bite the bullet, and pay a bit more for a higher quality pump. Using a return style pressure regulator, and plumbing in a return fuel line should extend the life of the pricier pumps.
Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
If you do wind up having to stick with a electric, I have had good luck with Mr. Gasket 12s
They need no regulator or return system.
You want a pump that produces 2-7PSI, no more.
For ease of explanation you do not want a round type, you want a square type ... The reason I say that is most (not all) round types are gear pumps, gear pumps require a recirculating system to keep them cool... Some gear type pumps have internal recirculating bypasses not all. So for ease of identification stick with a square pump.
-Enjoy
fh : )_~
They need no regulator or return system.
You want a pump that produces 2-7PSI, no more.
For ease of explanation you do not want a round type, you want a square type ... The reason I say that is most (not all) round types are gear pumps, gear pumps require a recirculating system to keep them cool... Some gear type pumps have internal recirculating bypasses not all. So for ease of identification stick with a square pump.
-Enjoy
fh : )_~
Post Fiend
Joined: Dec 2007
Posts: 8,521
Likes: 16
From: Lost
One of my RX7's has one of those square pumps, and when the car is first started, the fuel pressure guage reads a solid 6 PSI. After 20-30 minutes, I'm lucky if it shows more than 2 PSI. However, it has never failed to supply enough volume to feed the edelbrock 600, even when the guage reads less than 2 PSI.
Always make sure you have a good filter between the pump and tank, to keep debris out of the pump. That can dramatically shorten pump life.
Always make sure you have a good filter between the pump and tank, to keep debris out of the pump. That can dramatically shorten pump life.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
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
Thread
Thread Starter
Forum
Replies
Last Post
shorebird
1968-Present E-Series Van/Cutaway/Chassis
2
Sep 25, 2011 10:00 AM
Wicked Endings
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
13
Feb 9, 2011 07:04 PM
tseekins
1987 - 1996 F150 & Larger F-Series Trucks
40
Sep 9, 2009 07:53 PM
canadian mole
1999 - 2003 7.3L Power Stroke Diesel
30
Oct 19, 2008 01:32 PM
