Im not sure whats going on with my car, but its been starting a little funny and running slightly off. On a cold start it sputters a little like its not feeding enough fuel or its not sparking properly. Its quick then starts so that worries me. When its running, if i hit the gas pretty heavy the engine makes this ticking noise, but only when i open it up. Light acceleration and idle its fine no noise. i thought it was a bad belt but it seems fine i know all the signs of a worn belt. it could be the exhaust leaking at the heads, but im pretty sure that it would do that all the time. i was told it could be a sticky lifter, but im not sure. can anyone help me out. i did a full fluids change about 2k miles ago and it started happening the day after. so i took it back to Jiffy Lube. they said they couldnt find any thing wrong with the car but i know thats bull ****. Its just gotten a lot worse lately.