Engine Miss

[Blazin00]

Just recently i changed the plugs, plug wires, cap, rotor, fuel filter, pcv valve. The miss only happens at an idle and the oil pressure gauge varies while its missing. Can anyone help?

[GMCTruck]

could be when u change your plugs and what not you move the rotor for the dist..... and double check that everything is tight

[5.3isnota327]

Sounds to me like a bad or corroded ground, look for a spot on the intake or the back of one of the heads, there will be a bunch of black wites bolted in one place. Take them loose, clean each one and the area where they bolt and see if that helps.