Q: How to service the evaporative emission canister purge valve on Mercury Mariner?
A: Detach battery ground cable, and check that there are no smoking or flames before proceeding to service the evaporative emission canister purge valve. Take out the electrical connector, quick connect couplings and then remove the valve out of the bracket. Repeat these steps in the reverse order to install the system, and then follow-up by a leak test.
Q: How to service and repair the evaporative emission canister purge valve on Mercury Grand Marquis?
A: Unconnect the battery ground cable. Disconnect electrical connector of EVAP purge valve and two quick-connect couplings of EVAP tubes. Press the lock tab downward to remove the valve out of the bracket. Installation of the new valve is by reversal. Then do leak test and EVAP repair verification drive cycle.