Couldn't found the gas tank bolt

I don't know the precise method of removal but I advise you to put safety first.

Disconnect the battery. Use only inspection lights that are incapable of being a source of ignition. The wrong choice of lighting is the most common cause of garage fires.

Ensure there are no sources of ignition and no smoking in the vicinity and the work space is well ventilated.



Before beginning ensure the fuel tank is empty or close to empty so it is light enough to handle without liquid swilling around inside making it over-balance.



Ensure all the nuts, bolts and other fixings will remove easily when the time comes. If the top of the tank is accessible from inside the car to remove the pipes and wires, this is the next stage.

If the tank must be partially lowered to access the pipes and wires whatever is likely to hamper the process must be removed or disconnected and pushed aside. Generally the filler must be released next and the tank supported on a jack or a stand while the straps or fastenings are released so the tank can be lowered far enough to remove pipes and wires as required.



Plastic tanks can be a problem and as they age the problem gets bigger. The fuel pump and gauge sender is often retained by a large plastic screw ring like a large jar top.

Speed is essential when dealing with these. If the pump and gauge unit is to be replaced get it out as quickly as possible and screw the ring back on.

Failure to do this could mean the tank needs replacing. The screwed neck is apt to grow when the ring is removed and delay could mean the ring will never screw down again...

Lawn Mower or a Car ?

Remove the tank straps & drop the tank

If you have a pick-up,l tipping up the box, may be
easier,especially if it is old & the bolts are nothing
but rust

Sounds like vapor lock. Leave the cap from the gas lid undone for a little while.

This is a bit pf a custom car type lash up and untill you can get some local advice here dont use the car as the excess fuel will wash oil from the cylinder walls causing piston /and ring damage ,You need someone local who can sort out and re-map the fuel injection system for you just for starters,Nice try and do admire greatly your determination in making something work but as iam in spain iam not a lot of help on this matter also owing to europeon vehicle law i wouldnt be allowed to do this for a rad vehicle as it detract from the certificate of homoglonation so a non standard vehicle just isnt allowed ,cannot even change the back lights for a fancy one let alone a engine

It may just be the fuel pump seal at the top of the tank. it has to be dropped for a definite diagnosis. It is rare but the tank seams occasionally crack too. Good luck.

May be easier to loosen rear box bolts,remove the
front bolts & tip up the bed, rather than lay on your back
& have to drop the tank & that way you don't have the
fuel removal issue,can stand there & just work on top
of tank

No but you need to drop the tank and remove the retaining ring that holds the fuel pump and sending unit in.Replace the pump as well the cost is'nt much difference.

not sure on this amerian car but most vehicles have a inspection cover over the top of the fuel tank under the back seat and i think you may be leaking on the flexible piece rubber tuber around this area

Cutting a hole in it could cause you to get exhaust gas inside the cabin and I do not recommend you do this. It is easier if you just break off the bolt and drop the tank then replace the bolt. If you try to drill it out you could short out the wires on the tank or drill a hole in the gas tank and cause an explosion.Thanks for using fix-ya.

Removal & Installation To Remove:

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Shift the vehicle into NEUTRAL and position it on a hoist.
3. Release the fuel pressure.
4. Disconnect the negative battery cable.
5. Remove the fuel tank filler cap.
6. Drain as much fuel from the tank as possible.
7. Using suitable hose pinching pliers, clamp the fuel tank filler hose. Clamp the fuel tank filler hose in the location shown
   
   
8. Disconnect the three quick connect couplings from the fuel tank tubes at the tank.
9. Disconnect the fuel pump electrical connector.
10. Disconnect the fuel filter inlet tube from the filter.
11. Position a suitable lifting device under the fuel tank.
12. Remove the two fuel tank support strap bolts.
13. Lower the fuel tank to access the fuel pump module while swinging the fuel tank support straps away from the tank.
14. Clean the area around the fuel pump mounting flange.
15. Disconnect the fuel pump module electrical connector and the fuel pump module fuel outlet tube.
16. Using the special tool, turn the fuel pump module retaining ring counterclockwise and remove it. CAUTION
    The fuel pump module must be handled carefully to avoid damage to the float arm, filter and convolute hoses.
    
17. Turn the fuel pump module counterclockwise and the fuel pump module will release from the locking tabs. Remove the fuel pump module from the fuel tank.

To Install:

1. Install the fuel pump module in the fuel tank.
2. Connect the fuel pump module electrical connector and the fuel pump module fuel outlet tube.
3. Raise the tank into position and install the mounting strap bolts. Tighten the bolts to 26 ft-lbs (35 Nm).
4. Connect the fuel lines and electrical connectors at the fuel tank.
5. Lower the vehicle and refill the tank.
6. Connect the negative battery cable.
7. Turn the ignition key to the ON position to pressurize the fuel system.
8. Visually inspect the fuel system for leaks.