Warning
Fuel Leakage Inspection
Warning
Caution
1. Short the check connector terminal F/P to body GND using a jumper wire.

2. Turn the ignition switch to ON position to operate the fuel pump.
3. Pressurize the system in this way for at least 5 minutes
to be sure of no leakage.
4. After repair, assemble the system and repeat Steps 1 to 3.
Before repair procedure
Fuel tank removal/installationMazda 6 Service Manual: Cylinder head gasket
CYLINDER HEAD GASKET REPLACEMENT
Warning
Fuel vapor is hazardous. It can very easily ignite, causing
serious injury and damage. Always keep sparks and flames away from fuel.
Fuel line spills and leakage are dangerous. Fuel can ignite and
cause serious injuries or death and damage. Fuel ...
Mazda 6 Service Manual: Heater core inspection
1. Remove the A/C unit. (See A/C UNIT REMOVAL/INSTALLATION.)
2. Remove the heater core from the A/C unit.
3. Inspect for cracks, damage, and coolant leakage.
If any problems are found, replace the heater core.
4. Inspect for bent fins.
If any are bent, use a flathead screwdriver to stra ...