The best way to remove gasoline from a car that hasn’t been run [SOLVED]
I have a 1986 Corvette that has sat with the same full tank of gas for about 12 years and not been started during this time. It’s an L98, 5.7 L with aluminum heads. I used a fuel stabilizer for the first few years of this period but not for over 8 years now. Will Sea Foam help? Think I can add and try to start the engine after adding Sea Foam to the old gas? Recommendations? Thanks!
Thanks for the question Mike. Gasoline is far too degraded at 12 years old – expect all of it to be heavy suspended varnish (dark, smells like varnish). Adding Sea Foam to dead fuel will do nothing. What I would do: Start by removing (siphon/drain) as much fuel as possible from the tank. Once the tank is empty, add three cans of Sea Foam and a gallon of fresh fuel to the tank. It’s likely that the fuel filter is contaminated and the fuel lines are full of varnish so don’t expect the engine to fire until the Sea Foam and fresh gas mix can make it to the chambers. Remove the spark plugs and crank the engine several times to pull the new gas from the tank. Once you notice fresh fuel coming through the plug cavities, stop and let everything soak for a day or two, then put the plugs back in and test if the engine will fire. It will idle rough for several minutes before it starts to smooth out. At that point you can add more fuel. Be sure to continue running the engine so the fresh fuel and Sea Foam mix can continue to clean and flush out the whole fuel system. Do what you can to continue replenishment of fuel and oil until the old crud has been purged. Use Sea Foam in oil too!
Jim D.TECH
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