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#65075 08/30/2006 8:20 PM | Joined: Apr 2004 Posts: 703 Shop Shark | | Shop Shark Joined: Apr 2004 Posts: 703 | I just received word from a mechanic that was looking at why my 1994 F-250 (7.5 litre V-8) wouldn't start.
He's telling me that with dual tanks, I have to have gas in both tanks, or the truck won't start and run. (Apparently, my father-in-law ran the back tank dry when he borrowed it.)
Now I may be thinking old school, prior to all of this computerized junk they use these days, but this just isn't computing with my brain.
Why would the truck care whether or not one tank has fuel if you're trying to run the truck off of the other tank and it's full?
Anyone out there know anything about this topic?
Thanks, | | |
#65076 08/30/2006 8:44 PM | Joined: Aug 2005 Posts: 6,377 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,377 | Beats me. You might try posting your question in the Froid truck news group (alt.trucks.ford). Someone there has probably run across that problem before.
Save a life, adopt a senior shelter pet.
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Name your dog Naked so you can walk Naked in the park.
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#65077 08/30/2006 9:28 PM | Joined: Oct 2005 Posts: 4,249 "Hey! I sound like Darth Vader!! | | "Hey! I sound like Darth Vader!! Joined: Oct 2005 Posts: 4,249 | Should be a switch on the dash. If one tank is dry, the other will provide fuel. If it is a definite fuel problem, and neither tank supplies fuel when switched on the dash, I would suspect the switch, power to the switch and / or the tank selector valve. A bad selector valve could also not provide the proper power to the proper pump. Along the way could be relays, fusible links, etc. Start at one end and work towards the other.
Short version: your truck won't care if one tank is dry. | | |
#65078 08/30/2006 11:05 PM | Joined: Mar 2004 Posts: 3,068 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 3,068 | My uncle had a frieght company and each truck had dual tanks. He told me if it ever starts to die, meaning run out of gas, while driving, switch the tanks as quick as possible or you won't be able to switch them without adding gas to the empty tank. I think the valve hangs up with fluid on one side and air on the other. Don't know for sure, but this urban legend is true,
Scott | | |
#65079 08/30/2006 11:11 PM | Joined: Apr 2004 Posts: 703 Shop Shark | | Shop Shark Joined: Apr 2004 Posts: 703 | 48bigtrucks,
That's quite possibly the answer.
If not, if at least sounds like a reasonable explaination.
Thanks for taking the time to answer. | | |
#65080 08/31/2006 5:43 AM | Joined: Apr 2004 Posts: 703 Shop Shark | | Shop Shark Joined: Apr 2004 Posts: 703 | Scott (48bigtrucks)
Went and had a face to face conversation with the mechanic. What you described is exactly what he told me happened.
Sure surprised me. Never would have thought that could happen. | | |
#65081 08/31/2006 6:44 PM | Joined: Mar 2005 Posts: 92 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2005 Posts: 92 | I'm glad she's up and running again,
Scott | | |
#65082 08/31/2006 9:27 PM | Joined: Oct 2005 Posts: 4,249 "Hey! I sound like Darth Vader!! | | "Hey! I sound like Darth Vader!! Joined: Oct 2005 Posts: 4,249 | Shouldn't be a problem by 1994. I'd replace the valve as it is weak. Furture breakdowns will be coming for sure if you don't. | | |
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