i have a 97 chevy k1500 with the 5.7 i changed the plugs,wires,cap and rotor truck running really rough you can smell fuel in the oil and very heavy at the motor. i have changed plugs twice cylinder 5 and 7 the plug is wet covered in fuel and and cylinder 6 is fouled out. i don't know if i have a injector stuck open or if maybe the fuel pressure regulator have any thing to do with it i am at a stand still i don't want to drive it because i don't want to screw it up more than what it already is. but it is my only transportation. any advice would help thanks.