I've been able to regularly start my engine ever since I got about a year ago, but just recently I had to get my smog pump and alternator belt replaced. Since then, I took my car on one trip to the bank and it has not been able to start after that. At first my engine would crank, but at this point it cranks once and then stops. Checked the battery and it's fine. Is it possible that replacing that smog pump could've caused something else to fail? Any help would be greatly appreciated.