this weeknd i went to visit my dad in my hometown which is 3 hours away..on the way back home the car felt and sounded good..when i exited to get home i got to the red light and my car felt and sounded like it was gonna die on me..the rpm's went passed 1 and then under it...so then today i got to school opened up my hood and i got a spark plug thing sticking outand my engine is covered in oil.i plugged the dpark plug holder thingy back on and i went to the mechanic... on the way my ses light went on and it really felt like my car shut off i mean i accelerated and my muffler just didnt sound normal somethin like a sputtering sound..he tightened my plugs in the front and tells me it might be my valve cover gaskets...can anyone help??