1. Remove the charcoal canister.
2. Plug the atmosphere side port and purge solenoid valve side port of the charcoal canister.
3. Blow air into the charcoal canister from the fuel tank side port and verify that there is no air leakage.

Emission system
Evaporative gas check valve (one-way) inspection (l.h.d.)Mazda 6 Service Manual: Egr valve removal/installation
1. Disconnect the negative battery cable.
2. Disconnect the EGR valve connector.
3. Remove in the order indicated in the table.
4. Install in the reverse order of removal.
Water Hose Removal Note
Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT.)
EGR Valve Removal Note
1. Re ...
Mazda 6 Service Manual: Spark plug removal/installation
1. Disconnect the negative battery cable.
2. Remove the plug hoie plate.
Lift off and remove the plug hole plate from the installation areas
(rubber and clips) as shown in the figure.
3. Disconnect the high-tension lead.
4. Remove the spark plugs using the plug-wrench.
5. Install th ...