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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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Old 08-17-2013, 02:39 AM
Jermafenser Jermafenser is offline
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1997 F350 front fuel tank inoperative

This is the newest automobile I own, so I'm not knowledgeable in this area.

Recently the front fuel tank will not supply the engine with fuel. The rear tank is operational. However, I prefer to use the front tank because it's safer than the rear. The fuel gauge while on front registers fuel. Just to make sure, I put in five gallons of fuel in the front tank. It still will not supply fuel.

How can I diagnose this problem, whether it's mechanical or electrical? The only thing I can think that is, are the fuel tanks fitted with an individual pump inside both tanks, or something else as one works, the other doesn't.
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Old 08-17-2013, 08:20 AM
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Is the truck a gas or diesel engine model?
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Old 08-17-2013, 02:25 PM
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Can you hear the front pump when you turn the key to ON without starting the truck?
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Old 08-20-2013, 04:07 AM
Jermafenser Jermafenser is offline
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Quote:
Originally Posted by rla2005 View Post
Is the truck a gas or diesel engine model?
It is a gasoline truck. It has the 5.8L.

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Originally Posted by Island'r View Post
Can you hear the front pump when you turn the key to ON without starting the truck?
Would it be loud enough? I'm nearly deaf, so that may be not possible to just hear it. I'd have to confirm with a multimeter.
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Old 08-20-2013, 08:40 AM
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Each tank has it's own high pressure fuel pump inside. There is a common power path from the fuse, fuel pump relay, through the inertia switch then onto the fuel tank selector switch on the dash.

For reference (very similar to your truck):
Click the image to open in full size.courtesy of oldfuelinjection.com
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Old 08-20-2013, 08:40 AM
 
 
 
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