Check engine light came on and was told to change vvt solenoid. did that, went out for a while was coming from being out, it came back on and started running eradical. took it some where and was told that it was miss firing. change plugs. left plugs incoils and tried to see if i had spark. had someone crank car over, didn,t see spark, but acceldently tuched a couple and felt something. need to know where electric suppies the coils or what should i check next