ok i put used injector's in my car.i cheked them all and they were good.but i had bad gas in the car when i was done.i havent put new gas in it yet but it's smoking out the tailpipes and it smells like burning.i dont think it washed down the cylider walls cuz i got new rings and had the pistons reworked.it also has a slight miss and inside the left mufler gets RED hot when i ran it for about 5 min.so can someone pzzzz help me???