Ok, there are a few post on here about me having water in gas, then rust.
I need help!! I bought a new tank, and fuel pump. I cleaned my sending unit since it has been working fine, and looked fairly new. I blew out my gas lines.
So, I installed everything. It all went together fine, I start her up and she fired no problem. Ran for a 20 sec. or so and died..kinda normal since it hasn't been started in a few weeks.
I checked for gas leaks....still ok. I looked in the carb to see if it was spaying....it looked very weak. Tried to start again...nothing. I unhooked the line at the carb and turned it over.....no gas is coming through.....
I'm stuck? What did I miss???? The ONLY thing different is the tank went from a 16.5 or whatever the stock side tank is to a 17 gal.
Not ONLY that, but the last starting try, my freaking Starter hung up AGAIN...I have replaced 3 solenoids in a month....thats a whole other issue!!!!
I'm ready to sale this headache, no matter how much I love her.......
I would think the new pump is bad or no power to the pump.
If you have pressure regulator, it may be letting the fuel return to the tank. That is, if the line you disconected is after the regulator.
Rod
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2002 Escape (as fitter said "Wifes Ride")
1999 F250 4x4 SD Crew 7.3 "The Beast"
1999 Mercury Sable
1982 F250 4x4 Known as BullDog! wilh a 300 l6, Offy "C", Holley 390 CFM
1960 Austin Healy Sprite MK I (Bug-Eye)
What year, model, engine. My 86 F250 460, the NEW PUMP COMES WITH A NEW SENDING UNIT. It came as a UNIT if you buy OEM. If your talking ELECTRIC PUMP. If you just bought a pump from someone that would be my guess the problem. I need more info to really try & help you figure it out.
85 f-150 351W G vin. 2 brl carb.
It's a mechanical pump, I have been doing some searching via google, sound's like I didn't get the arm lined in right MAYBE???? right now I'm enjoying a few beers to calm down.....I'm half minded to go out and light the $%##@^& on fire.......
Start at halfway point, the line going into the fuel pump.
Pull it at the fuel pump and draw pressure, no gas = pull sending unit, good gas = look toward fuel pump for problem after you test the line for a big air leak (you will know if it has one).
If pulling sending unit, check that pickup tube or whatever is picking up gas. SOmetimes the filter on the end falls apart or clogs. Get sending unit pulling good gas and your good. Maybe the larger tank needs the specific correct sending unit to reach the gas?(couldn't say off the top of my head)
If looking to the fuel pump forward, put a satelite gas can above the pump and hook it up making sure the line from the satelite can tot he pump is full of gas. put a line to the output of the fuel pump and point it outside the engine compartment into a collection can. Turn the engine over. You should have fuel pumping, if not fix the fuel pump. If you have fuel coming out of the pump look to any filter or carb issues after the pump.
The carb probably has a small screen filter between the input and bowl. Just check it all at that end of the fuel path.
If you have a strait forward manual engine fuel pump and carb system, it can only be so many things wrong.
However if you have a manual pump system on a truck that came with fuel injection originaly you could have all sort of extra fuel line and sending unit issues.
Give me a call (number on my web site) if you want some help figuring it out. Be safe with this or you might get your way about burning your truck!
Start at halfway point, the line going into the fuel pump.
Pull it at the fuel pump and draw pressure, no gas = pull sending unit, good gas = look toward fuel pump for problem after you test the line for a big air leak (you will know if it has one).
If pulling sending unit, check that pickup tube or whatever is picking up gas. SOmetimes the filter on the end falls apart or clogs. Get sending unit pulling good gas and your good. Maybe the larger tank needs the specific correct sending unit to reach the gas?(couldn't say off the top of my head)
If looking to the fuel pump forward, put a satelite gas can above the pump and hook it up making sure the line from the satelite can tot he pump is full of gas. put a line to the output of the fuel pump and point it outside the engine compartment into a collection can. Turn the engine over. You should have fuel pumping, if not fix the fuel pump. If you have fuel coming out of the pump look to any filter or carb issues after the pump.
The carb probably has a small screen filter between the input and bowl. Just check it all at that end of the fuel path.
If you have a strait forward manual engine fuel pump and carb system, it can only be so many things wrong.
However if you have a manual pump system on a truck that came with fuel injection originaly you could have all sort of extra fuel line and sending unit issues.
Give me a call (number on my web site) if you want some help figuring it out. Be safe with this or you might get your way about burning your truck!
Ok, I've settled down a bit..I was on a whirlwind last night...drinking beer and wrenching don't mix
So, today, SAT. I go about it again...I took the line off from the carb, had a friend turn it over and I had my finger on the line, I can feel it pushing a bit, not REAL strong {don't know what the pressure should be}
The I broke it loose at the line side, the pump is sucking, again not real strong. I assume now I'm not getting gas in the line from the tank now...I checked the line all the way down, didn't see any kinks or visible breaks. I'm thinking now sending unit. I think my old tank was like 16 gal. the new tank is 17. I'm using the old sending unit since it worked fine on the other tank.....NOw I'm thinking that is the issue. Correct me if I'm wrong, isn't the sending unit working off the vacuum created by the fuel pump?
BTW, thanks for the help....sometimes these old beast's can get the best of you
Oh....what do I use the draw pressure on the line besides my mouth??
The sending unit works off a float like in a toilet bowl. There is a screen at the bottom of the pick-up tube that could be plugged. Try like Mike said with some gas on the inlet side of the pump. A vacuum/fuel pump pressure gauge works for testing fuel pumps. From what you described you might have to pull the pump again.
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54 F100, 78 F150, 86 F250, 70 F100 Member #5 Boy you ain't Right Club
Well today I took a cup and filled it with gas, unhooked the line coming from the tank, and put it in the cup...it fired right up, so I know the pump is working....SO some from the line back to the tank is the issue.....it's too hot out there right now to climb around
I'm going to try the cup trick at the line at the sending unit and see next.....
Check or replace all the rubber lines between the tank and the fuel pump inlet. Sounds like one or more is cracked and leaking air. Not uncommon on vehicles this age.
OK, last post before I spend a few hundred on a tow and mechanic
I took the line off at the sending unit, and stuck it in a gas can, truck started right up....So pump works, lines are clear. I put a spare line on the sending unit and blew, I didn't hear bubbles but heard it blow though the pickup screen....Kinda wondering if I was out of gas....I put in 5 gallons when I started this project, gauge reads 1/4 tank.....
Anyway I hook it all back up and she started...ran for maybe a min. or 2...I got under the hood and looked in the carb, it was jetting fine. Then died.
So sending unit maybe?????? Isn't it just acting like a straw basically, sucking up through the pickup screen and through the line???
OK, this is the last post..lol
SO I pulled out the sending unit and stuck it into a large cup...it's sucked away..., but wouldn't start....where the heck is the gas going??????
No leaks.....I'm changing the fuel filter again MOnday just in case some crap got in there even though it's new, I'm sure some dirt got from the underbody in when I put in the new tank.
Problem now is my battery is dead......
