sounds like the same thing that happened to me. Its probably the plug wires. look for some corosion or grab ahold of them, if you get shocked thats what it is. You will also need to change the plugs too. I found this out the hard way.

 

there is smoke coming from under my hood i belive it comes from the back of my engine i dont know what from but i just reacently instaled a cold air intake around the time this problem started also my engine oil presure goes down when the engine gets warmer and theres white smoke from the exaust at start up