Thread: Old gas.

you should be able to siphon it out . go to a garage and see if they have a old electric fuel pump . when they replace them they will still pump but not the pressure needed for the new fuel system .some hose and a battery should do the trick . i have several some where i saved over the years

Remove the connector at the motor and let it drain. You can add a gallon of fresh gas to rinse out the old. Reinstall the connector.

Get a portable motor fuel tank. you may have one ,or a friend might. Trace your fuel line to its final connection to the engine. Hook up the portable there. this will eliminate the boat tank, lines, and squeeze bulb. this will tell you if it is in your fuel system, or something on/in the motor.

To get the old fuel out you "should" be able to siphone.

I use an old fuel line and bulb (remove the connections on both ends). Make sure the arrow on the bulb is ponting the correct way. Insert on end into the tank. Keep in mind that some tanks have a one way flapper on the top that doesn't allow fuel to come up the file hose (this might be your issue). Once to the bottom, start pumping the bulb to remove air and start suction (way better than doing it with your mouth). IF you cannot get the tube in, remove fuel line from motor. Remove end connection and allow gravity to take over after pumping the bulb a few times to prime. You can also use air from a compressor pushed in through the fill tube.

IF you have a fuel water seperator, remove line from tank to seperator and it should function the same.

Fiveeyes has a good idea to ensure it is/isn't the problem you are looking at!

Go to auto parts and buy the cheapest fuel pump you can buy like for a race car for example. They are cheap. some fuel line to attach to each side, however long You think you would need, a double hose barb to fit the fuel line and hose clamps for the barb and the pump. unplug Your fuel line from the motor, take out the plug that goes to the motor and insert the hose barb. Hook the line to the pump to the other side of the hose barb. Clamp down. Get you a 5 gallon bucket to catch gas. rig You some jumper wires to go from a battery to the pump. Clip on the battery and the pump should pull the fuel out like Your motor would. I did this on a combine that got a leak in the fuel tank up high. Had to get all the fuel out so the tank could be replaced. I just ran a hose down into the fill spout on the tank for that particular job but it worked like a champ. Sucked out 125 gallons of diesel fuel in about 2 hours. still have that rig right now in case I ever need it for something else. Sure beats pumping by hand. Its slow but gets the job done.CF

If you have access to a air compressor you can unhook the fuel line at the engine, take a rag and wrap around the air blower to create a seal and hold it on the fill hose, it will push all of the fuel out. Unless it has a vent then you will have to cap the vent then blow

I have the siphon kit from Harbor Freight. I use a 1/4" steel rod and tied the hose to it to keep it straight to the bottom of the tank. After the tank was empty I added 2 gallons of fresh gas. I removed the hose and connector from the engine and pumped it for 5 minutes. Then emptied the tank. The old gas barely had a smell to it. I mixed 50/50 with new gas and ran it in my tractor.