Rust in fuel tank remove and repair instructions

If you have water in the tank you will also have corrosion or rust.
Drop the tank and dispose of the contents in an approved mannor; NOT down a drain!! Check for any rust damage and if not too severe reuse the tank.
Clear the 'wet fuel' from the system by disconnecting all of the feed pipes and hope the pump has not been damaged by lack of lubrication from the water.
Remove the injector feed pipes and allow to drain.
Reassemble all but the injector feeds to allow for bleeding the system, refil with fuel, cycle the ignition key to fill the system with fuel and when fuel sprays from the injector feed, reconnect the injector and attempt to start the engine.
Good luck.

I had the same problem turns out that the inside of fuel tank will rust clogging up fuel pump.remove back seat passenger side remove the large black cap there's the top of the tank remove lock ring pull out pump assy use a flash light look for rust if so remove tank clean and reinstall.

If you are reffering to the fuel tank sending unit, the fuel tank will have to be removed for access. Once removed, you can remove the sending unit by removing the lock ring securing it to the tank. Depending on rust/corrossion, the lock ring may require some patience to remove. Once the ring is removed the unit pull right out of the tank

Try cleaning your fuel tank

There are some products which will repair a fuel tank. It depends on the leak.

Some of the products require removing the tank, adding the leak chemical and swirling the mixture inside the tank. Other products are like JB Weld which could work, but there are specific chemicals just for this job.

If you have rust on a 1999 vehicle, it can cost you less to replace the tank new, than to buy chemicals and lose gas when they do not work. Rust is especially hard to guarantee a repair on. Fix one place and another leaks a day later.

Check out the Internet for new tanks. It will be harder to find an old tank because most are ripped off before the Salvage cars are allowed on the lots.

Radiator shops sometimes do this repair.

I hope my solution is helpful.

Overtime, Jeep Grand Cherokee fuel tanks develop rust and accumulate sediment. This is especially true if the tank sits empty for a period of time. Rust and sediment can break loose and cause clogged filters. When the filter is clogged, the engine does not receive the amount of fuel required to operate. The fuel tank can be cleaned out; however, replacing the tank is easier.

1 Apply the parking brake.

2 Remove the gas cap.

3 Remove the fuel pump relay from the power distribution center under the hood. Look at the underside of the power distribution cover, and locate the fuel pump relay.

4 Attempt to start the engine, cranking the engine for several seconds.

5 Turn the ignition to "Off." Install the fuel pump relay.

6 Disconnect the negative cable from the battery.

7 Lift the fuel tank into position, using the jack.

8 Attach the fuel filler hose and vapor return hose to the fuel tank.Tighten the clamps with a Phillips screwdriver.

9 Pivot the fuel tank retaining straps into position. Tighten the fuel tank retaining strap nuts with a socket and ratchet. Lower the jack.

10 Connect the fuel pump electrical connector, the fuel filter line and the fuel return line. Push the fuel line retainer into the chassis.

11 Raise the heat shield. Install the mounting bolts. Tighten the mounting bolts with a socket and ratchet.

12 Install the tow hooks or trailer hitch, if equipped.

13 Lift the skid plate into position with the jack. Tighten the skid plate mounting bolts with a socket and ratchet.

14 Attach the electrical service connector to the bumper with a socket and ratchet.

15 Raise the jack and remove the jack stands. Slowly, lower the vehicle.

16 Pour the fuel into the gas tank. Connect the negative battery cable.

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You realy need to remove the tank to do this .However i know some people who cut a hole in the flood over the fuel tank and did it that way although i don;t recamaned it because you will likely have other issues holes in the top of the tank or problems with fuel lines being rusted and ruptureing when disturbed there are a lot of rust problems with chevy fuel tanks and systems

Lots of possibilities.

Could have corrosion build up and rust clogging fuel tank pick up. Usually reverse air pressure helps, but would help to remove tank sending unit to see if you can **** out any water or gunk.

Could have vacuum building up in tank. Make sure charcoal canister purge valve is working right, and no hiss when taking off gas cap.

Could be fuel pump. Check pressure and volume, leakage, etc.

Could be filter. If carb, remember there is a small filter in the carb as well.

If fuel injected, may have bad pressure regulator or safety valve in line.
The pressure test results will help.

Should be relatively simple. First off, if it has an underbody spare tire, you may need to remove that. Also, I forgot to ask if the vehicle is equipped with two fuel tanks. These instructions would be for the rear tank, which would probably be a lil more difficult than the front tank.
And you should probably siphon out as much existing fuel in the tank to make it as easy to handle as possible-when that time comes.-Most tanks have a drain plug at the bottom just for this purpose. You will need a floorjack (I recommend a piece of wood that will stabilize the tank) to ease the tank down slowly-there may be some more small hoses/and /or electrical connections (fuel/tank sending unit?/pump?) that you may have to play with/remove before completely lowering to the ground.

1-remove spare tire-if applicable
2-disconnect the battery-negative cable at least or the entire battery as a whole
3-drain fuel from tank into suitable container
4-remove fuel filler hose(fuel filler door to tank-hose clamps)
5-place jack into position
6-remove straps/bolts securing fuel tank to underbody
7-lower down the tank slowly until you can access the other electrical connections/fuel lines
8-remove and disconnect those-(I use colored tyraps to mark which ones go where-because a lot are the same size)
9-If you are tranferring the fuel pump/sending unit(some are two separate units,others are one piece), I recommend a new filter bag on the fuel pump-theyre cheap
10-installation is the reverse of removal-

Hope this helps!

You've got water in your tank. There are fuel additives that remove water from the gas tank that work very well. As you run the tank low, all the water and other "junk" that collect on the bottom of the tank are now being injected into your fuel line, causing erratic idling and occasional misfires.