Hi all, my 1992 sr5 4x4 developed a gas leak from the top of the tank and the truck is getting harder and harder to start. I can see the top of the tank and the tubes coming off the top unit look corroded. Is it a pump or vacuum line or sending unit line that must be leaking and causing the hard start. I am going to drop the tank and take a better look. Any info from you guy's would be greatly appreciated!!

Thanks much

 

The pressurized pump line to the motor. You have a leak, so you're losing fuel pressure. Very common area to spring a leak. It's coming off of the fuel pump mounting bracket and you'll need to replace it if you can't fix the leak.....ie. the line is too corroded and will just break even further in the future.

 

The pump unit is on top of the tank I presume, that seems to be where the gas is leaking from. Then I drop the tank to get at it?
Thanks much Matt, Cheers

 

The pump itself is in the tank. What you see on top of the tank is the top of the mounting bracket that submerges into the tank (with the FP attached) and covers the hole.

Yes, you'll need to drop the tank.

http://personal.utulsa.edu/~nathan-b...28fuelpump.pdf

If the connection of the pressure line to the line on the bracket look seriously rusted, start spraying the connection and FP bracket screws (fastening the bracket to the tank) with penetrating fluid. Thrust or PB blaster are often recommended. Tap the connections with a hammer to set up vibration and relieve surface tension. Try not to damaged the connection so as not the strip. May happen anyway if they are terribly rusted.

Anyway, if all goes well enough once you have it apart, all you'll need to replace is the bracket. Some would go so far as to replace the pump while your in there. Up to you and your budget.

Note: There's a drain plug on the fuel tank for your convenience. Soak all bolts will fluid and tap before you start. Unless, they actually look they will come loose easily.

Good luck.