I recently purchased an 06 f150 fx4 5.4L with 60K miles. Just recently my check engine light came on and i've noticed a slight rough idle in park. I took it to autozone and the code read P0422 evap emission leak. Bought a new fuel cap but didn't help any suggestions... EGR valve? Any help would be appreciated thanks.

 

Please keep all questions regarding a single issue in the same thread instead of opening a new one. I answered you in your other post that I saw first.

Old posts may be edited for up to an hour.

Otherwise, the forum gets littered excessively with dead threads and posts...

Steve