ok i got a 1996 4.9L when i first start the truck, the spark knock starts right away. then when i start to drive it, it gets really bad. if i put it to the floor, it goes away until i shut it of and re start it! I had the check engine light checked and they said it was lean, bank 1, and bank 2. I hope someone can help me out.
new cap,
new wires,
plugs,
cats,
new coil,
egr
new cap,
new wires,
plugs,
cats,
new coil,
egr