[gad]

Hello,

My father recently purchased a 1989 911 Targa. Had it inspected after purchase, mechanic said, beautiful, well maintained, etc. Dad has been driving around town off and on for the last few weeks, car ran great. He got gas the other day, Cheveron Supreme, and now the car is running horrible. The previous owner had been putting Shell gas in the car.

Could the Techron have loosened particles, etc and maybe clogging up part of the fuel system? Because after putting in the fuel, the car starts fine, but when you push on the gas pedal, it will rev to 1000-2000 and just bounces up and down. Giving it even more gas almost to the floor and it doesnt rev any higher. He tried to drive it, I really cant describe how it ran. For the first few miles it was fine, then all of the sudden the engine would loose power, car would barely run. Car would rev slowly to 2000 (if that), and just bounce up and down, then it will finely catch and the car would take off. It did this the whole way home for about 6 miles.

Not only was it embarrassing, the constant jerking couldnt be good for the engine. So after he made it home, pissed off of course, he siphoned out the Cheveron gas and filled it back up with Shell. The car drove fine after that for about a few trips around the block and then the loss of power, car surging, idle bounce was back.

Any advise would be greatly appreciated. I have spent all night trying to find a solution for him. Thanks for your time