Truck is running lean and very rough sounds like a boat in the water
I ha e a 2003 Chevy Silverado z71 with the 5.3
vortec. I acedently put jp8 jet fuel in my gas tank
about 5 liters and ran it through the truck have put
two full tanks of gas since then but still having
problems. It says my bank one and two sensors
are running lean and it is skipping a cylinder when
ideling . i think it migh just need new spark plugs
and fuel filter and fuel pump any ideas .