Hi guys i have a 98 chevy tahoe..5.7 vortec.4x4. I have a horrible miss on cylinder#2 can't figure out why.put in shop was told i had a bad distributor unit.paid to have replaced with how of getting my baby back to running. Got her back she ran a little better but still had miss.and now when driving around 50 mph i have to lay in about half throttle to get response.if not she stumbles and hesitate.pulled#2 plug was starting to foul out again already.things replace cap,rotor,wires,distributor,plugs,please help....thanks in advance.