I recently bought a 1982 Supra. Run good when i first got it but I left the key on one day for abot 15 minutes while I was washing it. Got in to crank it and she wouldn't do anything. I noticed that gas was running out the air filter intake. Played around with it for a bit and found the motor wouldn't turn over at all but would go backwards. Gas was running out the muffler. If I leave the key on for 3 or 4 seconds the motor fills with gas. Have changed the Fuel Pressure Regulator with no luck. Anyone got any ideas. Please I Need Help.