hey guys, how smooth does your truck run? like when you are accelerating? i have a 2006 fx4 5.4 and it seems like its got a bit of a "roughness" upon accelerating.

 

Smooth as glass

 

yeah i feel like im going crazy. I swear my engine was smooth as glass a few months ago and now it just doesnt feel the same as it did, inless my head is really messing with me. I replaced all splark plugs, new throttle body, fuel injection flush all with dealer parts. Just doesnt seem as smooth as it once did

 

How many miles are on it?

 

56k miles

 

mabey its a dirty fuel filter or something like that. I have a habit of running it down to empty alot, probably sucked up some dirty or rust from the tank.

 

Clean the MAF sensor....that will cause an issue if it's dirty

 

56K miles and his fuel tank is rusty already...he's got problems.

 

yeah i will try and clean MAF, i haven't done that yet

 

How can I replace the fuel filter