Yesterday I got the plenum gasket fixed, today I changed the plugs, I drove about 20 miles,no prob. got back in the truck to go home and bamm chcek engine came on. Whats up?? I checked the wires but they are so damn hard to push onto the plugs, I need a wire diagram and a trick to remove and install the wire on the plug, can anyone help?? Ive never had plug wires this tight.