About 3 months ago I went to get in my car, it's a 93 GT, it turned over maybe a dozen times and would not start, I had to hold the gas pedal to the floor to get it to start. after that it ran and cranked great, then yesterday I stopped to get some gas, went to start the car and it popped thru the intake one time and would not start, it took 5 or 6 times cranking it to get it started. it's hard to figure out a random problem, do any of you have a place for me to start. the car is stock except for after market cat back. any help would be great.