fuel system prob?
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Senior User
Joined: May 2005
Posts: 315
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From: SW Kansas
fuel system prob?
Replaced the fuel pump, with a couple clear filters, one before the pump, one before the Carb. Ran good, but truck sat a couple days waiting for my buddy to set the fuel/air and timing. We went for a test drive, and it quit, wasn't pulling fuel. Front tank showed under a quarter, rear was unknown, bad sending unit. Wouldn't work on either tank. Had enough coming up the line to idle to the gas station, put 7 gallons in each tank. Still wouldn't pull fuel. Saw some gas in the lower filter, but bubbles too. Nothing in the top filter. Couple blocks from the station it quit altogether, but within pushing distance of my buddies shop. Blew air through the line, seemed ok, blew air into the tank until gas came out the hose, hooked it back up. Took the line off at the Carb, cranked it, no gas until I
put my finger over the hose, then it started to pump. Hooked it back up, been running ever since.
Similar symptoms was why I replaced the pump to begin with, might have wasted my money. Also, don't want it to die far from home, and my wife or daughter might drive it. It's my 80 F150 300/6, dual tanks.
put my finger over the hose, then it started to pump. Hooked it back up, been running ever since.
Similar symptoms was why I replaced the pump to begin with, might have wasted my money. Also, don't want it to die far from home, and my wife or daughter might drive it. It's my 80 F150 300/6, dual tanks.
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
9wire - How about placing info on your truck in your sig or user info? That would help diagnose this issue.
Without knowing the year, and therefore if you have rubber or plastic fuel lines, I'll assume rubber as it fits the problem. It sounds like you have bad hoses from the tank to the hard lines, between the hard lines and fuel valve, and at the fuel pump. Mine were and I had similar problems as the pump was pulling air in.
I replaced all the pieces, and they were rotted, and haven't had problems since.
Edit: I just saw that it is you '80. Sorry. But, it has rubber hoses and I would put money on them being rotten. My Dad's '81, which has spent its whole life in Ark City, had rotten hoses. My '82, also from AC, had rotten hoses.
Without knowing the year, and therefore if you have rubber or plastic fuel lines, I'll assume rubber as it fits the problem. It sounds like you have bad hoses from the tank to the hard lines, between the hard lines and fuel valve, and at the fuel pump. Mine were and I had similar problems as the pump was pulling air in.
I replaced all the pieces, and they were rotted, and haven't had problems since.
Edit: I just saw that it is you '80. Sorry. But, it has rubber hoses and I would put money on them being rotten. My Dad's '81, which has spent its whole life in Ark City, had rotten hoses. My '82, also from AC, had rotten hoses.
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