01 5.4 Triton occasionally cranks, wont start
#12
One of the easiest ways to pull a tank is to use cargo straps. You can use the ratchet to ease the tank down without worrying about the tank sliding off of a board on a jack or denting the tank. You can also drop the tank flat on the ground without worrying if the tank is going to slide off the jack or clear the body.
#13
n0021576
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FIXED! I took the plunge and spent a little under $200 for a NAPA pump and fuel filter and dropped it in on the 23rd. I now have 40LBS on the fuel rail and had NO problems with frequent starts and stops over the weekend, cold and hot. I bench tested the old motor about 25-30 times and sure enough, on one try it didn't move. Dead spot in the armature? Don't care. The old pump looks great in my trash can.
By the way, the tie down straps worked well in this app. It allowed me to slightly roll the take over and kept it relatively steady while detaching the two fuel, vent and electrical connectors without having to move the driveshaft or haivng it roll off a jack. Let's hope I don't have to do this again.
Thanks for your input, everyone.
By the way, the tie down straps worked well in this app. It allowed me to slightly roll the take over and kept it relatively steady while detaching the two fuel, vent and electrical connectors without having to move the driveshaft or haivng it roll off a jack. Let's hope I don't have to do this again.
Thanks for your input, everyone.
#15
Aerospace Engineer
I don't think bench testing a fuel pump is a good indicator of its working condition. I bench tested the last fuel pump my 88 Chevy ate and it would spin on the bench no problem, but for the life of me, it would not pump a drop of gasoline. I tried it three times (I have a hole in the bed of that truck, can do a fuel pump in 15 minutes). Replaced it with a new one and it fired up just fine.
#16
n0021576
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I completely agree. I benched the old one after putting the new pump in and it FAILED. The only reason I benched the old pump was for entertainment purposes. I was bored.
I have fallen in the "it benches fine" trap previously, which is why I replaced the pump BEFORE I benched the old one. Cheap insurance, especially since you can't access this pump without dropping the tank.
I have fallen in the "it benches fine" trap previously, which is why I replaced the pump BEFORE I benched the old one. Cheap insurance, especially since you can't access this pump without dropping the tank.
#17
I am having the same problem today with my 03 F-150. I am going to change the Fuel Filter today. and check the fuel pressure..
Is there only 1 shrader valve to check the fuel pressure on the passanger side fuel rail then? What should I be getting for pressure?
Is there only 1 shrader valve to check the fuel pressure on the passanger side fuel rail then? What should I be getting for pressure?
#18
n0021576
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That's the one that counts! I don't know of any others, but if you are not getting pressure on the fuel rail on the intake manifold, you got issues. There are a couple of great threads on the site on exactly how to do a diagnostic on fuel pressure, including a youtube video. I was stuck in a parking lot with a pen and a towel. Removed the cap, wrapped the towel around the pen and pushed down on the valve. By far not the smartest thing to do (but brave), but when the towel comes back with no gas on it, I knew I had problems.