Ford F-150 - 1997-2003 :: Rear Fuel Tank Overflow
Jan 15, 2015
1996 F-150 5.0... So I bought this truck a couple months ago for a really good price and its my regular vehicle that I use daily. While driving I switched tanks from the front to rear and when i reached my destination i noticed that fuel spilled from the cap, I opened the cap and fuel overflowed. I've read in forums saying that its the Fuel Pressure Regulator or the Fuel Tank Selector Valve . It still drives and runs fine, but I would like to know which part its specifically causing the problem?
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I have a 97 F-150 and my Radiator fluid has been leaking very bad but hasn't been taking the fluid from overflow tank. Actually the new fluid that I put in the overflow has now turned a rusty color....
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I have a 2000 expy with the 5.4 just turned over 200k. I bought the upper and lower radiator hoses awhile back and finally gotta chance to change them out. I noticed i got the wrong bottom hose so I only swapped out the top hose. I filled it back up with 1.5 gal of distilled water. After I drove it about 60 miles I checked the overflow tank and noticed copper colored flakes in it. Im assuming the previous owner put some stop leak in it but not sure Ive never had any problems as far as overheating or losing coolant. What else could it be? Im going to get the right bottom hose and do a flush. Can I use the bottom hose I have, its got the two extra hoses for the oil cooler? I was just going to connect the two hoses together but not sure if that will cause a problem.
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I have a '88 F250 with a couple of dual tank issues, first of all if I'm running on the rear tank the fuel returns in the front tank.... not an isssue if trhe front tank is empty, but if both tanks are full the front tank will overflow. If the front tank is empty I run on the back tank until I'm out of gas and switch to the front and I"ll have about a half a tank in the front tank.
Second issue, running the front tank the fuel gauge stays on full until I have about half a tank, then it works OK. If I'm running the back tank it stays on full, even after the tank runs out of gas??
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I am scheduled to leave on a trip in the morning. I have installed an 85 gallon in bed auxillary fuel tank. I plumbed it in as per the instructions and the same as the last two I had in other trucks. After install I pumped 25 gallons in the aux to see how it worked. Every thing worked right. So yesterday I filled both tanks to the top and left the shutoff between them open.
This morning I noticed a puddle of diesel on the shop floor. Wiped it up and left for the golf course. Got home and found another puddle. I have closed the shut-off valve but it still seems to be leaking. It is not the plumbing I installed. It's hard to tell because I have a protector around the tank but it seems the leak is coming from the top. I just took a short run down the highway and reparked it. I have a can't miss appointment so when I get back I'll see how much has leaked.
Is there some kind of overflow on top the tank? Everything is dry where the aux tank is plumbed in and the air pipe seems to be fine. If the leak stops with the shutoff closed then I'm just gonna head out but if not then I'm gonna take down the shield and see what I can find, but I'd sure rather not.
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My '97 truck has over 315,000 miles on it, original fuel tank, 30.1 gallons, replaced fuel pump maybe a 9 months ago. No gas gauge problems until today. Bought gas this AM and had about 3/4 of a tank. During my drive home (56 miles round trip), noticed the gauge was read about an 1/8. Had monsoon rains today, so I wouldn't have noticed any gas pooling under the truck or a smell if it was suddenly leaking. On the was to fuel up, low fuel light came on. Bought only 5 gals of gas in case tank was leaking and I have to drop the tank. Low fuel light out after restarting the engine but the gauge reads the same, about an eighth? Diagnostic ideas? Won't really be able to examine the tank for leaks until things dry off, probably tomorrow. Diagnostics??
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My 99 F150 with 200K miles, but running like new, dropped the rusted front gas tank today. I removed it and would like to use the rear tank which is almost new - put in last year.
Is it possible to make it go with only the rear tank? This is only a plow truck (no plates or insurance) just used in my driveway! Top speed for me 4 MPH. hOW TO BE able to get it to run with only rear tank?
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So my truck felt gutless somtimes, wouldn't start Every couple days , and Fuel gauge stops at half tank won't show full, so I went n bought a new fuel pump..... Well shoot nothing changed . I guess my next move is pull the dash off n fix gauge? It used to be a reliable truck . Now Im not comfortable to let wife drive it . I also pulled the chip to see if that had to do with not starting, also theft light blinks normal. I'm going to get some connector grease n redo all of my wires to c if there's just connection issues.
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This is on my sig truck. I can hear the pump running, and a sound like fuel spraying around inside the tank, but not getting any up front to the carb. What is the most likely culprit for this? Can't get the bed off, or get the strap bolts loose, so I haven't been able to "eyeball" anything, yet.
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So I have a 98 f150 with the 4.6L V8. Been having some issues with it, first off it gets the standard film on the windows associated with a bad heater core, it doesn't leak fluid into the truck tho. But it does have an issue with heat. Also while driving the coolant system develops an air bubble and pushes fluid out the over flow. Also it periodically registers that it's over heating and goes into limp mode. if you press in the clutch and turn the truck off it resets and acts as if nothing ever happened.
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So my 7.3 started sputtering and lost power, died on the side of the road. I wasn't far from home put about 8 gallon of diesel in the tank with a couple of fuel jugs and it fired right up.
Gauge was reading 1/8 of a tank and low fuel light did not come on. (low fuel light comes on when you start) Gauge came up to about 1/2 after putting fuel in.
What happened? Gauge was always reliable and low fuel light always did work. Only work done to fuel system was had new tank straps put on a couple of months ago.
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My overflow tank seems to be going empty slowly. The last time I filled it was in March and I filled it to the Full line. Now, the overflow is almost empty. I did 425 KM last night almost non-stop and the level stayed the same since that night and today. So, I am not burning any thru the gaskets. Exhaust is not white neither.
I did see one suspect thought. I have this really small rad at the bottom of the bumper and it seems a little wet around the tubes that enter it. Could it be that? I have no spots on the driveway or road when I park. Specs of my truck:
190 000 KM.
Oil changed on Saturday.
Runs well, no loss of power.
Temps are good.
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I got a 64 F100 with a 292 that I am thinking of installing a coolant overflow tank on to aliviate having to fill the radiator frequently.
The question being............Is it a sealed system or do I need to provide an air bleed to adjust for the presure change within the cylinder I intend to use?
I realise that thermal syphoning will return the coolant to the radiator but am unsure as to weather or not I need to allow the airspace to remain at atmospheric pressure.
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I have owned my 2005 v10 ex since 60000 miles. Have had many dependable family road trips and love my truck.
Recently it has started puking coolant and the overflow tank smells like exhaust. The oil cap has some coolant sludge on it. But there is no coolant mixed with the oil. Or oil in the coolant.
I am pretty certain these are the signs of failing head gaskets. The truck has 193000 miles on it now.
Want to keep it on course. But keep it reliable. So do I buy new engine or do I just replace head gaskets?
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I have a 2002 Ford Explorer and I am still trying to figure out why the coolant will overflow in the radiator reserve tank. I put in a new thermostat and a new cap to the overflow tank. When the tank is cold, sat over night, I put in new anti-freeze to the cold coolant line. Then I start up the explorer and let it run for a while. The temp gauge goes up, then drops a tad and cold air comes out of the vents.
After I rev up the engine, I see the coolant level starts to rise in the overflow tank, then it goes to the top and starts to leak out. This takes a while being the thermostat has not kicked in to suck the fluid in. Before this happens, the heater core lines are luke warm. After the tank overflows, the remaining gets sucked into the engine and I get nice warm heat. What causes this. I had the test done to see if the head gasket is bad. The test was negative.
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Anyway here's the problem. My son has a 2000 Ranger 3.0L V6 he left me when he had to move back up to Las Vegas. I was out checking it out today and pulled the radiator cap, man what a mess. It looks like reddish mud in there and the overflow tank. It's not milky like oil in there it's more like mud. It's caked up on the bottom of the cap and inside the filler neck and the coolant looks the same.
So the questions are, what's the best way to clean it all out and what would cause it?
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I have the dual tank setup & this is my problem.
Last year I replaced both tanks - the front was leaking bad and rear was starting to leak. After replacing both tanks, the rear tank (which I was using before) was unusable - it would idle fine and when applying throttle would stall out. The front tank's gauge did not work.
This week I pulled both tanks. Had new gauge assembly put on front pump unit. Also had the rear pump replaced with a new (rebuilt?) one. Installed both tonight. Now the front tank is running fine with a gas gauge. I Filled up the rear and once I had about 16 gallons in, fuel started leaking from the front top of the tank it looks like (where in-tank pump is). This leak has continued as the truck was turned off too. I think it may have stopped now, but its dark and I am parked on a hill. As another problem, I still have the same "stalling" problem. The rear will idle fine, but start to stall out when a load has been applied.
So to summarize:
- What is causing it to want to & stall out?
- Why am I leaking gas?
It seems to stop dripping gas after (maybe) the pressure is lower from leaking the gas out. Also, when 1st starting it up on the front tank, it wants to stall out...probably from the gas that leaked out while it was shut off? The truck will run for about 1/20th of a mile on the rear tank when initially starting it up before showing signs of stalling.
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A while ago, the front (mid) tank on my '97 F350 4x4 stopped functioning. I thought that because when I'd switch to the front tank, it died. I decided to put it off and use the rear tank cos it worked.
Today I accidentally bumped the fuel tank switch to front, and it was working! Truck didn't die then I noticed the fuel gauge pegged past full. Having tested older trucks by grounding out the gauge sending unit wire, it would peg past full. So I think I had an electrical issue that caused the front fuel pump to stop working in the first place, not that it went bad as I originally thought...
So, does that mean the front fuel pump had been working all this time, just not grounded? Does the front fuel pump ground itself on the tank or is there a grounding point? I currently can't find any way to see how it was grounded, as it's crusty and all.
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So I have been troubleshooting a few cooling issues and I am currently at a loss of WTF is going on with this thing. The truck is a 99 5.4L SD and has no heat and was burping a little coolant.
The truck was originally burping coolant out of the overflow tank. After verifying that it was not a head gasket by all means except the exhaust gas test. I replaced the overflow tank and cap.
Now the truck is holding pressure fine but I do not have heat. Here is what I have done:
I replaced the blend door actuator--no heat
I went to flush the heater core and since the quick disconnects were such a bitch to get off I decided ti replace it while I was at it. --still no heat,
New thermostat 195 deg --no heat
The radiator is brand new
Supposedly the water pump was replaced by the previous owner I have all the receipts for the truck so I could double check
Truck seems to circulate coolant fine i measured temps at the water outlet with an IR thermometer peaking at about 175~10 deg due to accuracy of the thermometer and heat loss due to thermal variations the lower radiator hose and reservoir coolant temps were around 76~10 degrees so the radiator is working as advertised . Truck doesn't overheat, granted after draining and replacing the coolant the temp gauge did climb some while driving until i worked out all the air pockets but still didn't overheat.
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How/why does fuel transfer from front tank to rear tank ? I put 6 gallons in front, drove about 5 miles, parked over night, all fuel now in rear tank which was empty.
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1987 f150 302 4spd 4x4. When I bought the truck 4 years and 12K miles ago the orig owner had just installed a new front pump (in tank) and new switch thing on the frame rail. He said shortly after that the rear pump stopped working so he just ran off of the front tank. That's what I've been doing also except as of the last few months it has started to leak from the rear tank (I don't ever put gas in it and was empty when I bought it) and dies periodically from time to time? Where the leak could be coming from. I do suspect the dying has to do with the leak though.
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