I recently put gas in my car and all of a sudden it started to hesit. misfire and stumble. It seems like it dosent want to go and also stalling this has never happened before . My car is a 98 grand prix gt. I ran all of the bad gas out and also added sea foam to the tank. And maybe 7 gallons of new gas to the car and no change? Can you help Im worried.
Optional Information:
1998 Pontiac GRAND PRIX 3800 V6
Already Tried:
SEA FOAM IN TANK AND RUNNING OUT THE GAS.