What to do when you have bad gas in tank of a 1987 Oldsmobile Delta 88?

Answer 1

It depends on how much gas and what you mean by bad. If you have very little fuel in the tank and you mean it is just old gas, then pour in a can of Seafoam or Techron fuel treatment. If you think there is water in the tank and the tank is less than 1/4 full, then pour in a can of a product called Heat. Now fill the tank with at least 5 gallons of fresh gasoline and start the car. Now if the car has over 1/4 tank of bad fuel, then you need to drain the tank. Since few vehicles have a drain fitting on the fuel tank, you'll probably have to siphon the fuel out. Don't even think about sucking on a garden hose to do the job. Gasoline can cause cancer. And if you inhale a mouthful into your lungs, it can easily kill you. Purchase an inexpensive hand pump and pump as much as possible out. At this point you can remove the tank and fully drain it or pour in the fuel treatment and Heat and then some fresh fuel. Depends on how contaminated you think the fuel is. If you decide to remove the tank, keep in mind that fuel hoses can have residual pressure, as well as fuel that can spill out when it is removed. Eliminate pressure by cracking a fuel line loose near the engine or depressing the Schraeder valve on the fuel rail.