I was loosing speed as I was topping a hill on a highway, I put my foot down so that the passing gear would kick in, and it did but when I got off the highway my car was running really ruff almost feels like running on 5 cylinders. I shut it down, came back out about 5 min later to start it up. It had a hard time starting and when it did start it felt like it was getting to much gas. I step on the pedal and it feels like it’s missing. I installed new plugs and cracked the main fuel line going to the injector dist for just a moment thinking I may have put some bad gas in it. No change!!!