1997 Tank Size
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Junior User
Joined: Nov 2002
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From: Ridgefield, WA
1997 Tank Size
1997 F350 PSD Crew Cab, Long Bed. Can someone tell me how many gallons the front tank holds? I need to drop the tank to fix my sending unit and I would prefer it not be full of diesel. I could buy a pump and pump it out but i thought I could just run it down, with no guage it makes me nervous.
By the way, I have heard horror stories of people running diesels out of fuel. What happens? How do you get it going again?
By the way, I have heard horror stories of people running diesels out of fuel. What happens? How do you get it going again?
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Joined: Jul 2005
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From: Woodburn, OR
Originally Posted by Dirty_Pile
1997 F350 PSD Crew Cab, Long Bed. Can someone tell me how many gallons the front tank holds? I need to drop the tank to fix my sending unit and I would prefer it not be full of diesel. I could buy a pump and pump it out but i thought I could just run it down, with no guage it makes me nervous.
By the way, I have heard horror stories of people running diesels out of fuel. What happens? How do you get it going again?
By the way, I have heard horror stories of people running diesels out of fuel. What happens? How do you get it going again?
I have not ran out of fuel in my PS. On other diesel you will need to prive the fuel system. Some have a hand pump on the fuel system for priming after changeing the fuel filter. On my truck I do not prime or fill the filter housing with fuel after changing the fuel filter and the truck starts right up with out and issues.
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Dont run it out of fuel !!!
When you change the fuel filter & drain the canister it sits in, you are not losing the prime on the injectors.
Besides, do you really want to suck all the s**t out of the bottom of your tank and run it through your engine ???
Do yourself a favor, pump it out.
P.S. I belive owners manual says 20Gal. front, 18Gal. rear....no other options.
When you change the fuel filter & drain the canister it sits in, you are not losing the prime on the injectors.
Besides, do you really want to suck all the s**t out of the bottom of your tank and run it through your engine ???
Do yourself a favor, pump it out.
P.S. I belive owners manual says 20Gal. front, 18Gal. rear....no other options.
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pickup is on bottom of tank--suck the tank dry if it wants to--also--you may be able to just loosen the brackets to almost off--and get enough tip out of the tank to get the sending unit out--did that to quite a few tanks when was at dealer--sometimes you cant though--blow the area really clean so get no junk in tank--
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Junior User
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From: Ridgefield, WA
thanks 94_turbo, good info on the tipping the tank thing.
I figure 290 miles ought to be good to get it down near empty. Do you guys agree? (btw, truck is bone stock 5-speed 4:10 gears 4wd)
I figure 290 miles ought to be good to get it down near empty. Do you guys agree? (btw, truck is bone stock 5-speed 4:10 gears 4wd)
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From: Las Vegas, Nevada
I have the same truck, '97, Crew w/ Long Bed. When I first got it and didn't know any better, I ran each tank out completely, and then topped them off to see exactly what they held. I got exactly 21 gallons in the front and 19.5 in the rear. I have heard other results on this forum though, maybe there are some differences I don't know about. When I was filling them, I took my time and let the foam subside and then put in a little more until the fuel was right at the top of the neck.
BTW, when I ran the tanks dry, I noticed a sudden loss of power and the RPM's took a nosedive, like the engine went to about 400 RPM. I flipped the tank switch and after coasting for about 20 seconds the engine kicked back in and I was on my way. I was on the highway going about 70 when this happened (both times).
BTW, when I ran the tanks dry, I noticed a sudden loss of power and the RPM's took a nosedive, like the engine went to about 400 RPM. I flipped the tank switch and after coasting for about 20 seconds the engine kicked back in and I was on my way. I was on the highway going about 70 when this happened (both times).
Last edited by BigRed350; Jun 20, 2006 at 11:20 PM.
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Playing in the Dirt
Joined: Oct 2005
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From: Southwest Georgia
It is not a good idea to run your tanks empty before switching. The injectors are fired by the high pressure oil system. The fuel that is being injected is used to cushion the injector piston. Below was taken from the dieselmans page:
"Since the cavity at the top of the intensifier piston is seven times the size of the fuel cavity at the bottom, fuel is injected at a pressure seven times that of the computer-controlled oil pressure--oil pressure 3000 psi = injected fuel pressure 21000 psi. "
Just FYI.
"Since the cavity at the top of the intensifier piston is seven times the size of the fuel cavity at the bottom, fuel is injected at a pressure seven times that of the computer-controlled oil pressure--oil pressure 3000 psi = injected fuel pressure 21000 psi. "
Just FYI.
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Fleet Mechanic
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From: River Valley AR
Besides, do you really want to suck all the s**t out of the bottom of your tank and run it through your engine ???
The pickup always pulls fuel out of the bottom of the tank. If there is something solid in there that is heavier than the fuel, it's always near the pickup of the fuel tank. Picture putting a drinking straw in a glass and putting the straw as far down as you can. If you drop a heavy object in your drink it will go to the bottom where the straw is.
On the other hand if you have some crud floating in the tank that is lighter than fuel, you could give the light stuff a chance to get sucked into the fuel system if you run the tank dry.
The injectors are fired by the high pressure oil system. The fuel that is being injected is used to cushion the injector piston.
BTW my 97 has dual tanks and when the gauge reads empty it take about 14 in one and 16 in the other. I have never ran mine dry so I don't know for sure how much they will take if dry.
Last edited by bodabdan; Jun 21, 2006 at 07:07 PM.
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I HAVE run mine dry ... just to see how muck they hold. I can get over 20 Gals in both of them. If you are going to pull the tank off the truck, I would run it DRY then switch tanks... Our trucks are self primeing so it will fire up again without you doing anything special. If you are stopped when it runs out, you just crank on the starter till it fires... It will run a little rough till the air gets pumped out of the system but it will be fine.
