What does purge valve do f150?
The purge valve allows stored fuel vapors in the charcoal containment canister to be sent back into the engine to be burned when necessary. via
Can a purge valve cause misfires?
Q: Can a bad EVAP system cause misfires? If you are asking, “Can bad purge valve cause misfire?” Certainly, it can cause a misfire since the purge valve within the EVAP system of a vehicle is responsible for recycling fuel vapors into the vehicle's combustion chamber. via
Can a bad MAF sensor cause a EVAP code?
A failing mass air flow sensor or EVAP system purge valve can cause engine misfire concerns. Proper diagnoses of engine misfire issues is necessary to correct these issues. via
Is the EVAP purge valve open at idle?
The Purge Solenoid is normally closed but is opened by the PCM to allow manifold vacuum in the EVAP system — thus drawing fuel vapours from the EVAP system. via
How do I fix code po442? (video)
https://www.youtube.com/watch?v=73AR8Tl6YZU