Is there a way to remove old gas w/o removing tank

[76 xlc]

^^^ Aw, that's TOO simple. Item #1 is very important, though, we earlier posters overlooked that obvious, to us, safety step. Thanks for including it.

Jack's off for the weekend. (I couldn't resist getting a chance to use that double entendre)

[Will Marsh]

I have a junk FI electric pump I use just for this. It pumps just fine at low pressure, but won't pressure up anymore. Has about 10' of wires with alligator clips on the end to hook to a battery, and 10' of 5/16" hose on both sides. It goes in the spares box with a pressure regulator for emergencies as well.

First I pump all the junk gas out with it through an inline filter (Fram G-2 or equivalent) at the fuel pump connection. The filter is in the suction side to protect the pump.

Then I take a 2g can of fresh fuel with a 16oz can of Seafoam mixed in it, put a fresh filter on the pump, and drop the suction hose in the can. Pump the entire contents back through the plumbing into the tank (remove/replace/bypass any old filters that may be inline between your connection point and the tank also). Let that sit in the tank overnight, stopping by to jump on the bumper every hour or so when you have a chance. The point is to stir it up as much as practical, every little bit helps.

The pump it all back out same as you did at first. This batch I will pour in the tank of my commuter ('93 Buick with 160K miles) and top off to burn it. If it comes out really nasty I might repeat, it depends on the truck.

Then I fill it with a can of Seafoam mixed in, and run it. Burn it all preferably within a week or two. I'd change all the filters again if they look dirty after that, and that's one of the reasons I use the G-2's. Clear plastic.

HTH,

Will Marsh

[Infinite Monkeys]

Assuming your vehicle is currently running, you can gravity feed the carb and put a short piece of hose from the fuel pump output line into a container. Start the truck and let it idle. Since the pump puts out A LOT more fuel then the carb uses, it took me just a couple of minutes to take out 3 gallons of fuel. And it takes out every last drop. Also level your truck so the fuel in the tank is not collected to the front or back.

Keep the vehicle away from your house, keep a fire extinguisher very close by. This operation should be an easy and safe process. Just make sure there are no leaks.....Stop, drop and roll.