Question about 1986 Ford F 250
Fuel injected or carb ?
Posted on Jul 29, 2010
It should be inside the fuel tank but somethimes when its a mechanical pump its on the side of the engine block
Posted on Jul 29, 2010
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Posted on Jan 02, 2017
I JUST SPENT A WEEKEND SOLVING THE ISSUES THAT SEEM TO BE THE SAME AS YOURS. FIRST THE PROCESS OF THIS MODEL IS THAT WHEN THE KEY IS PUT IN THE RUN POSITION, THE FUEL PUMPS ACTIVATE AND ONLY FILL UP THEMSELVES. WHEN THE TRUCK ENGINE IS CRANKED, THE OIL PRESSURE ACTIVATES THE SENDING UNIT AND IT ACTUALLY TELLS THE FUEL PUMPS TO KEEP PUMPING WHILE THE ENGINE KEEPS TURNING OR RUNNING. IT IS A SAFETY ISSUE, AS IN A WRECK, THE ENGINE DIES, AND THEREFORE THE FUEL TO THE ENGINE IS STOPPED, AS A FIX, TRY PRIMING THE CARB, AND SEE IF IT RUNS BRIEFLY. YOU WILL ELIMINATE ALOT OF EXTERRANEOUS ELECTRICAL ISSUES IF IT RUNS. NEXT, CHECK CONTINUITY AT THE FUEL PUMP RELAY. IT IS LOCATED UNDER A PLASTIC COVER ON THE FIREWALL TO THE RIGHT OF THE BRAKE BOOSTER PUMP. MINE HAS 5 WIRES GOING TO IT. I HAD TO UNSCREW THE COVER TO ACCESS THE HIDDEN SNAP THAT HOLDS IT IN PLACE. HAVE SOMEONE CRANK THE ENGINE AND FEEL IF THE RELAY ENERGIZES. IF IT DOESN'T, AND THIS IS WHAT WAS WRONG WITH MINE, YOU WILL NEED TO FIND AND REPLACE THE OIL PRESSURE SENDING UNIT WITH 2 WIRES. THERE ARE 2 WIRES THAT WILL LEAD YOU TO THE OIL PRESSURE SENDING UNIT FROM THE RELAY. THERE ARE 2 SENDING UNITS AND THEY ARE LOCATED AT THE REAR OF THE EXHAUST MANIFOLD, BEHIND THE CARB. THERE IS A BIG ONE, WITH ONE WIRE, WHICH IS THE OIL PRESSURE SENDING UNIT FOR THE GUAGES, BUT BELOW THAT IS ANOTHER SMALLER SENDING UNIT THAT HAS 2 WIRES GOING TO IT. IT CLOSES WHEN THE ENGINE TURNS OVER AND ACTUALLY TELLS THE FUEL PUMPS TO KEEP PUMPING GAS. SEE IF THIS WORKS. THE FUEL PUMP RELAY WAS 15 DOLLARS AND THE OIL SENDING UNIT WAS 16. SPENDING ALL WEEKEND WITH THE WIRING SCHEMATICS AND TRACING ALL OF THAT STUFF-----------PRICELESS.
Posted on Oct 22, 2008
Actually, even in 1982 Ford produced fuel injected vehicles. They used electric pumps, rarther than the mechanical one r_clark is referring to. So, the question is, is it fuel injected, or is it carbureted? If it's carubureted, r_clark is correct. The timing cover is on the front of the motor as you are facing it. If you look behind the large main pulley at the bottom front of the motor you'll see an oval shaped cover. That metal oval cover is the timing chain cover. Look to the left of it, still facing the front of the engine and you should see the fuel pump if you have a carbureter. If, on the other hand you have throttle body injection, the Ford F250 uses two electric fuel pumps. One is a low pressure pump which is inside the fuel tank, the other is the high pressure pump which is mounted on the vehicle's frame. That one will normally be located just in front of the tank on the inside rail of the frame assembly. It looks like a large cylinder mounted on a bracket with wires going to it. If you see a cylinder that just has a fuel input and output line with no wires, that is an inline filter, not the pump.
Also, keep in mind if you are asking about the pump because you are not getting fuel, you might want to check to see if you have a large canister style filter down there on the frame. If that's plugged, you won't get adequate fuel!
Posted on Feb 08, 2009
The fuel pump is located between and underneath the turbo and fuel fiter housing.on top of your engine.it has a blue fuel line going to the front and a fuelline that goes to the rear of each head.it pretty hard to replace.
Posted on Sep 22, 2009
Tips for a great answer:
Fig. 2: The fuel pump and fuel gauge sender assembly (click image for zoom)
The fuel pump locking ring can also be removed using a brass drift.
Hope this helps (remember to rate this answer).
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