My car is running really poorly. I started the car earlier and it started meagerly. Then the idle was rough and it seemed like it wanted to die. There seems to be a slight ticking coming from the engine. I just ran it around the block and it was bucking and continued to run poorly. I've checked under the hood and everything seems connected. The car was running fine 2 days ago (the last time I drove it). Could it be bad gas? I did just fill up on Friday, but I did a lot of driving on Friday and Sat and it was fine. What do you guys think is wrong? Thanks for any help