Fuel pump
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Senior User
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Fuel pump
I have a '91 f250 7.3 and had read somewhere that instead of replacing the mechanical supply pump, an electric would be better.
Agree? If so what psi & brand of elec pump is best?
Thanks guys
Agree? If so what psi & brand of elec pump is best?
Thanks guys
Freshman User
Joined: Apr 2009
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This is the one I have. Little salty but works great. This pump is made to pull instead of push fuel so mounting under the hood is no problem.
Facet Integral Filter Pump - 40223 - Discount Yacht Supplies, Vetus Nautical Accessories, Scandvik Parts, Garmin Marine Electronics
Facet Integral Filter Pump - 40223 - Discount Yacht Supplies, Vetus Nautical Accessories, Scandvik Parts, Garmin Marine Electronics
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From: Ft. Worth
Mechanical Supply Pump...aka...lift pump
As far as the mechanical fuel lift pump...they are usually less expensive and much more reliable. Remember, this is according to my feeble mind. Why do I say this? First, the ford engineers are not dummies. (debatable).
Second, I've never owned a vehicle that utilized electric fuel pumps. I have owned my 1986 F250 6.9 for 16 of its 26 year lifespan, still drive her daily, and have never had any problems nor replaced the lift pump. In all my years driving other vehicles I only had to replace one and that was on my 7 year old 1969 dodge charger rt 440ci 4 speed.
Hope all the blabbering on helps you!
BeerCan500
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I've run both on two different trucks.
I replaced the lift pump on my '86 with an electric (the one everyone says is crap, a Mr. Gasket diesel pump) and it worked well until I sold the truck. Having an electric makes priming the fuel system much easier -- just turn on the key and push on the Schrader valve atop the fuel filter, and release when you start getting fuel. No need to crank and crank and crank until your batteries or starter die.
But, a cam-driven lift pump is simpler, probably more reliable, and if it fails I've heard a good injector pump will still keep you going until you can get somewhere to buy a replacement lift pump. An electric that fails might not let fuel pass at all.
There's pros and cons for both. I'm sticking with my mechanical lift pump for now, and I've got a spare (since I replaced it thinking it was the problem, but it turned out not to be).
I replaced the lift pump on my '86 with an electric (the one everyone says is crap, a Mr. Gasket diesel pump) and it worked well until I sold the truck. Having an electric makes priming the fuel system much easier -- just turn on the key and push on the Schrader valve atop the fuel filter, and release when you start getting fuel. No need to crank and crank and crank until your batteries or starter die.
But, a cam-driven lift pump is simpler, probably more reliable, and if it fails I've heard a good injector pump will still keep you going until you can get somewhere to buy a replacement lift pump. An electric that fails might not let fuel pass at all.
There's pros and cons for both. I'm sticking with my mechanical lift pump for now, and I've got a spare (since I replaced it thinking it was the problem, but it turned out not to be).
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I'm probly sticking w the mechanical. I'm only replacing it bc the truck is 20+ yrs old and appears to have been sitting for a period in its life. Im also replacing the injectors and glow plugs so i figured since it was so cheap... Why not eliminate one more old piece of the fuel system.
Thanks guys
Thanks guys
Laughing Gas
Joined: Mar 2011
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I'm probly sticking w the mechanical. I'm only replacing it bc the truck is 20+ yrs old and appears to have been sitting for a period in its life. Im also replacing the injectors and glow plugs so i figured since it was so cheap... Why not eliminate one more old piece of the fuel system.
Thanks guys
Thanks guys
I was able to rotate the engine with a 15/16" socket and a breaker bar on the crank bolt, and using a hand mirror and bright light to check that the cam lobe was pointing up.
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Joined: Aug 2012
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From: Ft. Worth
Repacing injectors and glow plugs
I'm probly sticking w the mechanical. I'm only replacing it bc the truck is 20+ yrs old and appears to have been sitting for a period in its life. Im also replacing the injectors and glow plugs so i figured since it was so cheap... Why not eliminate one more old piece of the fuel system.
Thanks guys
Thanks guys
As far as glow plugs go, I would recommend you purchase MotorCraft ZD1A.
I guess you already know all that tho. Good luck...
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From: Ft. Worth
Injectors
BeerCan500
i ain't rite
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From: Marlboro Mental Hospital.
negative. ZD-1 is for 87 and older with the old style glow plug controller. 87 and newer with the solid state glow plug controller uses the ZD-9 glow plug
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From: Ft. Worth
Glow Plugs
Sorry about that...you are right...I should have noticed we are talking about a 91...my badd
Postmaster
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These are the SAME electric fuel pumps that refer semi trucks use and those run 24/7, 365.
But, a cam-driven lift pump is simpler, probably more reliable, and if it fails I've heard a good injector pump will still keep you going until you can get somewhere to buy a replacement lift pump. An electric that fails might not let fuel pass at all.
There's pros and cons for both. I'm sticking with my mechanical lift pump for now, and I've got a spare (since I replaced it thinking it was the problem, but it turned out not to be).
There's pros and cons for both. I'm sticking with my mechanical lift pump for now, and I've got a spare (since I replaced it thinking it was the problem, but it turned out not to be).
Electric fuel pumps can keep up with IP demands and users report increase in performance. a better, more consistent fuel supply will make the IP and injectors last longer.
looking back on it now, i wish i would have done e-fuel when i replaced my leaking mech lift pump.
Postmaster
Joined: Feb 2011
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some would call me an extremist here, but i chose to have the mechanical pump PLUS an electric that ONLY runs when the glow plugs are lit or i hold the pushbutton for it. this allows me to prime the system effortlessly when air intrusion occors, while maintaining the simplicity and durability of the mechanical pump, especially since i replaced it only a year ago. i'm happy with it.
also, many who run alternative fuels experience short life from e-pumps, but no problem from the mechanical units.
also, many who run alternative fuels experience short life from e-pumps, but no problem from the mechanical units.
Fleet Owner
Joined: Jul 2006
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From: Mi'kma'ki
I'm probly sticking w the mechanical. I'm only replacing it bc the truck is 20+ yrs old and appears to have been sitting for a period in its life. Im also replacing the injectors and glow plugs so i figured since it was so cheap... Why not eliminate one more old piece of the fuel system.
Thanks guys
Thanks guys
a few folks have done this exact same thing,only to find out that the replacements made in China today fail shortly after replacing their old original functioning lift pumps.
if it ain't broke don't fix it,but if you do,upgrade to the duralift e-pump.
(yes it's true,i am very e-fuel biased.but no one want's to see ya broken down due to crap replacement parts sold today.)
personally if i were a mechanical lift pump fan,i would buy used from the salvage yard before i would buy new.the originals were known (as you know) to last many,many years.