I had the same problem w/a mustang I left in the garage for a few years with gas in the tank. What a mistake. Initially I siphoned out all the gas that I could and parked the car in the sun for a few days with the gas cap off. Then I fabricated a flexible extension hose for a tank type vacuum cleaner-this could be a hunk of garden hose duct taped to the vacuum's connector-and reversed the hose on the vacuum so that it was blowing instead of sucking, and completely dried out the tank with the warm air generated. Then I reversed the hose again and vacuumed out about a ton of crap, really, it must have been about a couple of quarts of dried up gas line clogging debris. I managed to get the tank pretty clean I think, and I'm sure the situation would have been greatly improved at this point, but I decided to pull the tank and fill it with a mixture of tap water and lye, which stripped all the remaining crud out. This worked, and eventually the car ran ok. If yopu vacuum the tank, try to avoid the area where the fuel level sensor is, as you don't want to damage this. Good luck..
I had the same problem w/a mustang I left in the garage for a few years with gas in the tank. What a mistake. Initially I siphoned out all the gas that I could and parked the car in the sun for a few days with the gas cap off. Then I fabricated a flexible extension hose for a tank type vacuum cleaner-this could be a hunk of garden hose duct taped to the vacuum's connector-and reversed the hose on the vacuum so that it was blowing instead of sucking, and completely dried out the tank with the warm air generated. Then I reversed the hose again and vacuumed out about a ton of crap, really, it must have been about a couple of quarts of dried up gas line clogging debris. I managed to get the tank pretty clean I think, and I'm sure the situation would have been greatly improved at this point, but I decided to pull the tank and fill it with a mixture of tap water and lye, which stripped all the remaining crud out. This worked, and eventually the car ran ok. If you vacuum the tank, try to avoid the area where the fuel level sensor is, as you don't want to damage this. Good luck..
I had the same problem w/a mustang I left in the garage for a few years with gas in the tank. What a mistake. Initially I siphoned out all the gas that I could and parked the car in the sun for a few days with the gas cap off. Then I fabricated a flexible extension hose for a tank type vacuum cleaner-this could be a hunk of garden hose duct taped to the vacuum's connector-and reversed the hose on the vacuum so that it was blowing instead of sucking, and completely dried out the tank with the warm air generated. Then I reversed the hose again and vacuumed out about a ton of crap, really, it must have been about a couple of quarts of dried up gas line clogging debris. I managed to get the tank pretty clean I think, and I'm sure the situation would have been greatly improved at this point, but I decided to pull the tank and fill it with a mixture of tap water and lye, which stripped all the remaining crud out. This worked, and eventually the car ran ok. If you vacuum the tank, try to avoid the area where the fuel level sensor is, as you don't want to damage this. Good luck..