In tank fuel pump quit

[stumpcatcher]

Hi
I have 86 RANGER 2.9LT Super Cab manual transmission 4X4.

The low pressure in tank fuel pump quit.

I have a good low pressure in line fuel pump.
Can I just splice the pump I have into the fuel supply tube between the gas tank and the fuel filter??

 

[Surrey]

Well, if the low pressure pump in the tank feeds the high pressure pump on the rail, If your idea would work, shouldn't the high pressure pump just do the job all by itself?

Just a thought.... I would think you at least need to replace the old pump with hoses or something.

 

[cammeddrz]

all pumps are designed to "push" not pull, and need a free-flow to supply them, hence why you even have the low-pressure in tank lift pump. you already have an inline pump, on the rail, and if your idea would work, they wouldn't have put a lift pump in it in the first place. it would burn out pretty quick if you did it ( I tried once)

also pumps have valves in them so you would need to pull the in-tank out just to allow for the free flow of fuel, if you are going to do that you might as well just do it right and replace the in tank, it's pretty cheap too.

 

[GentleRF]

Hi
I have 86 RANGER 2.9LT Super Cab manual transmission 4X4.

The low pressure in tank fuel pump quit.

I have a good low pressure in line fuel pump.
Can I just splice the pump I have into the fuel supply tube between the gas tank and the fuel filter??

Stumpy, you didn't say if it was carbureted or EFI. Different pumps for different applications.

Rick in East Bremerton

 

[cammeddrz]

Stumpy, you didn't say if it was carbureted or EFI. Different pumps for different applications.

Rick in East Bremerton

the carbureted engines had mechanical diaphragm pumps on the engines (diaphragm pumps are capable of "pulling" because the can generate suction that an impeller cant)

that being said, he said that it was a 1986...which trucks starting that year were fuel injected, and he said 2.9...which never came carbureted

 

[Andy D]

Maybe, The in-tank pump is a low pressure " pusher " Its job is to ensure flow to the main pump, which needs little help because it is a siphon. Keeping the tank 1/2 full will do the same thing. On my cars with this set-up, the in-tank didn't work for 10 yrs. All bets are off if the pick up is clogged.

 

[cammeddrz]

On my cars with this set-up, the in-tank didn't work for 10 yrs.

now let me get this straight, you had a non-functioning fuel pump for 10-years?

and whether or not the vehicle still ran, you didn't feel the need to fix it?

^^this is the kind of guy you need to be taking advice from

 

[stumpcatcher]

Ya its EFI, low pressure in tank fuel pump and high pressure fuel pump on the frame.
It had a full tank of 6 year old rotten gas and it was running cuz it was siphoning like Andy said above.

I took the rotten gas out so the tank got empty, put in 2 gallons and injector cleaner, so I spoze to get the siphon back Id havta fill the tank full.

I have a tank I can put in the truck box and put my pump on that, and that will do till I got time to drop the Ranger's tank. I need it running rite now cuz I gotta get firewood B4 the snow flys.

 

[cammeddrz]

ok,if you want to jury-rig something, I have done this on the trail when my fuel tank got ripped open like the exxon valdez....

put a fuel jug in the back, with a siphon hose going to the bottom. splice it in before the filter/high pressure pumo, get the siphon started. that will keep a siphon for a long time. also splice a hose to the return line that will allow the excess to dump back into the fuel jug. I got off the trail, and drove home 90 miles this way once

I had to zip-tie the hose to a stick to keep it at the bottom, and keep it straight. but it worked

I always carry several feet of fuel line, you may need to go buy some, and some clamps

 

[adsm08]

Stumpy, you didn't say if it was carbureted or EFI. Different pumps for different applications.

Rick in East Bremerton

He did too.

He told us it was a n 86 2.9. That gives you all the info you need about the fuel delivery system.

 

[stumpcatcher]

He did too.

He told us it was a n 86 2.9. That gives you all the info you need about the fuel delivery system.

Dattsa rite adsm08.

Ok, so heres the plan.........

Put 40 gallon galvanized gas tank in pickup box, then low pressure jobber fuel pump, splice into Ranger fuel line between gas tank & fuel filter, so ok fine.

BUT I dunno about this "return line" stuff Im not used to that.
Should I splice into return line and run a hose to the TOP of tank on in the box or does it havta go to the bottom??



PS I just had it running using jobber pump and jerry can sitting on the ground.

 

[cammeddrz]

you can run the return to below the fluid level (in the past I have done it by just T-ing) it into the feed before the pump

but the fuel stays the coolest when it drains into the top of the tank, and cool fuel = good running/long pump life

 

[Surrey]

I need it running rite now cuz I gotta get firewood B4 the snow flys.

Where the hell are you that snow is an issue!? ITS JUNE!!!!

Seriously though, dropping a tank usually isn't too hard. Couple of bolts, and a few fuel line connectors probably...

I did a fuel pump in my 98 Caravan in under 3 hours with just hand tools, and that included putting the tank back up all by myself.(and Im no wizz. I can typically get the job done, but dont expect it done fast)

 

[stumpcatcher]

Where the hell are you that snow is an issue!? ITS JUNE!!!!

Seriously though, dropping a tank usually isn't too hard. Couple of bolts, and a few fuel line connectors probably...

I did a fuel pump in my 98 Caravan in under 3 hours with just hand tools, and that included putting the tank back up all by myself.(and Im no wizz. I can typically get the job done, but dont expect it done fast)

Ya Shure, June now, tomorrow December, up here in the Great White North you spend all summer getting ready for winter. Firewood NOW wrenching later.
NOT dropping one tank, dropping two tanks, one on the Ranger to fix, and one on the Ranger wreck to get parts, with 27 years of rust and crud on the nuts & bolts, and all the "guard" plates too, at the rate my chicken outfit goes thats about 3 months.

3 months of spring, 3 months of fall, 6 months of winter and no summer at all...........

Im gonna do a total refurb on Ranger but NOT till I got 2 years worth of firewood in the woodshed.

 

[stumpcatcher]

you can run the return to below the fluid level (in the past I have done it by just T-ing) it into the feed before the pump

but the fuel stays the coolest when it drains into the top of the tank, and cool fuel = good running/long pump life

Yup, dats vot I tot.

Super help guys!!
thanks