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Fix a leaking petcock shut off valve

When I put fuel in the gas tank it runs right out down to the gas line out where the on off switch is for the fuel there's a ring in there but it's kind of ben and not sure if it supposed to be that way or what but every time I put it back together the knob just spins and spins

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You will have to remove the shut off
valve & replace a gasket or reseal it into
the tank

Posted on Nov 06, 2014

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Posted on Jan 02, 2017

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  • 18 Answers

SOURCE: hesitation, stalling like out of gas

Clogged Catalytic Converter. What happens is as you push down harder on the accelerator you force more gas into the system causing a slightly richer mixture and more exhaust flow is neccessary. The easiest way to look for a clogged cat is when it's dark out take it for a ride causing it perform it's problem look under the vehicle if the cat is literally glowing red hot you either have a clogged cat or an extremely rich fuel mixture.

Posted on Nov 20, 2008

  • 110 Answers

SOURCE: gas leak from bad o ring in fuel line

if its leaking from o ring will have to replace try nicking it up slightly

Posted on Dec 12, 2008

  • 1779 Answers

SOURCE: Gas line is leaking.

You want to be very careful not to make any sparks while working on this. The obvious is smoking, banging metal tools around, etc. keep cell phones AWAY from the area. Pick up some rubber fuel line from the parts store. Be prepared for some gas leakage, have a plastic pan under the leak. Disconnect the line at the tank, have a piece of new hose ready to push on over the line to as close to the tank as you can, have the end away from the tank plugged up temporarily with a pencil or something that fits snug in it, then remove the rubber hose on the filter, and connect new line from tank to filter, check for leaks, hopefully it is the rubber line you replaced, or the end of the metal line, so the new hose will hopefully cover the corroded leaking area. Clamp and Dry off area and see if you can spot any leaks.

Posted on Apr 15, 2009

  • 1 Answer

SOURCE: when I switch from my front fuel tank to my rear tank gas stops

There is no selector valve on a 1995 ford f150 300 engine. The selector switch on the dash sends power to the pump in the selected tank. The pump then sends fuel to the engine. If engine won't run on the selected switch, the pump in that tank needs replaced.

Posted on Oct 24, 2010

  • 701 Answers

SOURCE: Gas tank will not switch and gas runs out of fuel

Hello tlsnyder52: My name is Roger and I will help you. The problem you have is in the fuel select valve. This was a factory recall a few years ago. The recall number is 91S39.What happens is the valve sticks when you switched tanks. This returns all unburnt fuel to the tank you are not using. Basically fills the other tank while the one you are using goes empty. When you fill both tanks the returned fuel has nowhere to go. The fuel has to go somewhere and pushes out the vent. This is not a hard valve to replace. But I would check as if the recall was not performed it may be under warranty recall. The service kit number is F1UZ9B263B and can be obtained from a Ford dealer. Should You need further help please just ask. Please rate the answer. Thank You for using Fix Ya. Roger

Posted on Jan 26, 2011

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The hose is on the side of the gas cap and it runs down to the bottom of the quarter panel. When I filled the gas tank up, gas comes out of this hose. We just had the fuel pump replaced. Its not leaking...


There are normally two hose lines from the fuel filler that run to the tank. The larger one carries the fuel from the nozzle to the tank. The smaller one is a vent hose that allows vapors to leave the top of the tank while filling. These vapors come back to the nozzle area and can be vented and/or collected by the nozzle depending upon air pollution standards in your area. If your second hose is running to the bottom of the quarter panel, it is probably the vent hose that may not have been reconnected at the top of the tank when the fuel pump was replaced. The fuel running down there is from kickback fuel at the time the pump shuts off. The real problem is that the vent line is open on top of the tank and when the tank is full, that can allow vapors and fuel to escape out of there and it could contact hot exhaust areas - a major fire or explosion hazard. Have this inspected and repaired IMMEDIATELY.

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I just bought a 450 a few weeks ago and it ran fine for a while then one day on the way home it seemed like it was running out of gas. Being only a few blocks away from the house I went directly home. When...


fuel petcock screen may b clogged or u may have a soft fuel line n it's collapsing. drain tank n remove petcock n replace fuel lines it's a good idea to do every year with this crappy gas these days it eats everything.

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Hi Tom- - you can check the pressure regulator by blocking off the return line to the gas tank and/or pulling the vac hose to the regulator if it is accessable.
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The code is for a large leak in the EVAP system such as a loose or missing gas cap. But it could also mean a loose or missing hose to the canister or other leak in the tank.
The computer vents the tank several times an hour while the engine is running, and it checks the system by pressurizing the gas tank. If the tank will not hold pressure the code is set.
You may have to check the top of the tank where the fuel pump gasket is, as well as the vent lines to the front of the car.
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Jul 23, 2012 | Honda Accord Cars & Trucks

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Car runs great but it starts hard having to pump it. when running it will shut off especially at low rpms.i take car out of gear and shut off and it will restart.i put new plugs and wires and tps.i tried...


This problem is caused by in most cases the fuel pressure bleeding down when the engine is shut off, this leads to air in the fuel line because the fuel leaks back to the pump and then into the fuel tank. The fuel pump is electric and it has a built in fuel pressure check valve in the pressure outlet of the pump. To confirm this is the problem you must have a fuel pressure leak down test run, the test port to check fuel pressure is on the top of the engine in the pipe that supplies fuel and sets over the top of the fuel injectors. You can purchase a fuel pressure test gauge from most auto parts stores for about $20.00. Hook the test gauge up to the test port (it looks like an oversized tire valve) start the engine and verify you have no leaks at the connection of the gauge, once that is sealed and has no seepage of fuel note the fuel pressure at idle, shut the engine down and watch the gauge, it should not drop more than 4 pounds in one hour, in most cases it will drop off right away. If the fuel pump is the problem you will need to replace it, to do that requires you drop the fuel tank down out of the car, this is a very difficult job on the ground, you will need to raise the car as high off the ground as possible, support it on jack stands and then with a hydraulic floor jack support the fuel tank and remove the filler neck then remove the two steel straps that secure it to the cars underside, once the straps are off slowly lower the tank and remove the fuel lines and the electrical connector from the fuel pump/sending unit connector, then remove the tank and remove the retaining ring that holds the fuel pump/sender module inside the tank. Reverse to assemble, then put at least 4 gallons of gas in the tank to prime the pump.

Jan 08, 2012 | 1994 Oldsmobile Silhouette

1 Answer

Ive got an 1988 corvette sometimes it takes 3-7 tries to start whether cold or warm and other times it starts fine and has also stalled out while driving down road


Sounds like it could be a fuel pump or a fuel pressure regulator depending on the engine you have. Usually when it takes more than a second or two of turning it over before it will start means the fuel is going back down the line when not running. This can be because of a leak, not fuel leaking out but air leaking in, the fuel system or it can be as easy and a gas cap not properly venting/letting air into the tank as the tank empties. If it doesn"t let air in the tank, then the fuel that is being pumped out is creating a vaccum and sucking the fuel back into the tank when you shut the car off. Try opening the gas cap and letting some air get in just before you shut the car off. Then if it fires right up next time you know you need to replace the gas cap. If not check for vaccum leaks around the intake. Good luck.

Oct 03, 2011 | 1988 Chevrolet Corvette

1 Answer

Does my ford motorhome have a gas shutoff switch 1991 ford sprinter v-8 7.5 liter


Most pickup based motorhomes have 2 fuel tanks, you may have a tank selector valve that is electric or vacuum operated. Check underneath and follow the fuel lines from the tank to the front of the engine, somewhere in between you may find that the fuel hose goes to a valve that is used to switch between the 2 tanks ie: main fuel tank and auxillary fuel tank.

Mar 29, 2010 | 1991 Ford Econoline

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2000 ford windstar gas smell on the inside only no gas leaks already changed the fuel filter the pcv valve is fine as well .where is the smell coming from? and why is it only on the inside and u can't...


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Mar 11, 2010 | 1998 Ford Windstar

1 Answer

1998 Nissan Maxima


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