1986 efi fuel pump
Thread Starter
|
Junior User
Joined: Dec 2003
Posts: 85
Likes: 0
From: midwest
1986 efi fuel pump
my fuel pump is howling and i can only push the gas 1\4 inch before it starts to stall will rev to 2000 then falls flat on its face will sometimes free rev up past 200 but dies under load i think it sat and the gas is bad in the back tank front leaks what special tools do i need to get the filter off also would it be a good idea to switch back to carb and take that pump out of the mix its the one on the frame rail sorry for punctuation never been good at english
Fleet Mechanic
Joined: Nov 2003
Posts: 1,500
Likes: 2
well I hit the nail right on the head. It was the valve and resorvoir assy. Now, if you are lucky, it could just be your fuel filter which is in the botton part of that unit. Carefully unscred the 2 mounting bolts so you can unscrew the resorvoir portion of the assy. In that assy, you will find a fuel filter. I almost guarantee yours is plugged solid just like mine was. I had further problems with mine resulting in me chanigng out the whole unit (dealer only my price 125.00). Works great now...watch the thin o-ring that comes with your fuel filter because it's very easy to break it when screeing the bottonm cover back one.
Thread Starter
|
Junior User
Joined: Dec 2003
Posts: 85
Likes: 0
From: midwest
well heres some new info on the beast as i now refer to it. i drove it to work this morning. (taking back roads so i dont hit my 45 mph speed limit) symptoms snafu as usual. parked it went in to work didnt start it until lunch. putt up to the corner store shut it off at store putt almost back to work then i punched it going around a corner just for S&G and it just came to life spun the tire till i let off ran pretty good on both tanks park work then on my way home still runnin better then the same old symptoms start agian switch tank to front runs great i get goin then switch agian to rear 2-3 minutes runs crappy agian.
i dont understand how it can run great on both and crappy on both all in a 15 min period
lisa did your truck do this magical switch back and forth style
i dont understand how it can run great on both and crappy on both all in a 15 min period
lisa did your truck do this magical switch back and forth style
Logistics Pro
Joined: Jan 2007
Posts: 3,827
Likes: 103
From: Martinsburg, WV
I also refer to the same filter here in this thread... I also give a part number for it.
https://www.ford-trucks.com/forums/s...11&postcount=7
that thread contains a similar issue.
https://www.ford-trucks.com/forums/s...11&postcount=7
that thread contains a similar issue.
Trending Topics
Thread Starter
|
Junior User
Joined: Dec 2003
Posts: 85
Likes: 0
From: midwest
well i didn't change the filter but i did blow it out just to see what happens it got better but i'm still having problems it has a weird missing problem but if i get it to rev it cleans up . also i was on my way from work runnin great on the rear tank cruise at 45 till the 30 comes up i let off slow down roll on to cruise 30 and boom runs like crap switch to front cleans up till it runs out of gas as it goes to die i switch to rear crap dead wont start well i got some gas in the front tank fires right up and runs like a champ switch to rear runs like a champ roll of the throttle to turn after driving a couple miles starts the crap agian front runs good after could a fuel regulator do this any one got n e ideas
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Thread Starter
|
Junior User
Joined: Dec 2003
Posts: 85
Likes: 0
From: midwest
well it runs damn good now on the front tank so i'm gonna pull the strap on the front tank and jb weld the hole and just use the front tank it's a 200 dollar truck i wanna drive it till i can afford a nicer one and keep this beast for parts or a play
Thread Starter
|
Junior User
Joined: Dec 2003
Posts: 85
Likes: 0
From: midwest
alright i pulled the tank this last weekend to fix a leak but i didnt get em all after doing so it ran fine on the back tank for 2 days would get its little missing fits but would clear up after reving until today died agian sputtered trying to run but eventually gave that up as well and just cranked put a lil gas in the front tank started right up switched to rear ran great rest of the way home any ideas is there a way i can wire the pumps to run on 3 switches one for each