purchased this 2003 f150 4.2l about a year ago. One of the first things I did was replace the air filter and fuel filter at the same time. I’m the 3rd owner at 160k miles. 1st owner was a construction company which at least took care of transmission fluid changes. 2nd owner purchased at 120k miles and took care of nothing except oil changes. The air filter was filthy.
Truck ran much better after that…even better when I replaced the spark plugs and wires (and eventually the cracked coil pack). I’m sure the plugs were never replaced. Gap was .062 and new ones pre-gap is .044
By the way, the transfer case and differential fluids were disgusting too.
Attached filter porn…
Truck ran much better after that…even better when I replaced the spark plugs and wires (and eventually the cracked coil pack). I’m sure the plugs were never replaced. Gap was .062 and new ones pre-gap is .044
By the way, the transfer case and differential fluids were disgusting too.
Attached filter porn…