about 3 weeks ago I was at the gas station up the street and the damn indian heard the pump stop at $8 but for some reason decided to sqeeze the last gallon in anyway click by click til it reached $10 (dumb **** dont know what "NO!!!" means...I put $10 in everytime I drive her cause my gas gauge is broke (becuase I hooked a vacuam line to the tank and it ended up sucking the tank in (dented in).(long story).I removed the vacuam but its still dented in so the gas gauge dont work...since then everytime the last gallon of gas gets sqeezed in she trys to stall so I need to keep the RPMs up a bit, give her a few revs and she'l be fine again...but this time as the last gallon of gas got sqeezed in she tryed to stall like always but got worse and was puffing alot of white smoke out the passangers side exhuast (true dual)(smelled like gas bad)..drove her straight home puddering bad and she stalled in the driveway once I let off the gas pedal...I started her up again but less smoke out the passangers side exhaust..all plugs were black..(she sat for 3 weeks) yesterday I changed the plugs and started her up, no smoke, ran ok but smelled like gas bad!...let her idle for 5 minutes then took her around the block but half way around she started studdering again so I pulled her rite back into the driveway and she stalled, still no smoke, checked the new plugs and they smelled like gas...WTF!...fliuds are not contaminated,no overheating, cap and rotor are fine, carb is fine, I bought a compression tester but it doesnt clear my headers, I have to take off my headers and exhaust on my back in the driveway...I need some opinions here, what could it be?...she ran perfectly fine until that last gallon of gas was sqeezed in!?...what could the last gallon on gas do to make her do this, I checked all the plugs I just replaced (after one slow lap around the block) and they are all soaked in gas!..any help will help alot, thanks