3
z
Visually inspect the complete fuel
delivery system for damage and
leakage.
z
Check the following:
{
Fuel lines and connections
{
Relays
{
Fuel tank
{
Fuel pump
{
Fuel pressure regulator
{
Fuel pulse damper
{
Fuel rail at fuel injectors
{
Damaged connector pins
{
Electrical connectors not fully
engaged
z
Verify that the vehicle has followed the
maintenance schedule. A new fuel filter
should have been installed within the
last 48,280 km {29,934 mph}.
z
Verify that the fuse integrity.
z
Verify that the battery is fully charged.
z
Verify that there is clean sufficient fuel.
z
Is a concern present?
Yes Repair if necessary. Then go to Step 11.
No
Go to the next step.
4
INSPECT ALL SYSTEM RELATED
DEVICES (SENSOR, DAMPER OR
REGULATOR) FOR LEAKAGE
z
Turn the ignition switch off.
z
Connect the fuel pump connector.
z
Turn the ignition switch to the ON
position (Engine running)
z
Check for manifold vacuum at each
system related component with a
vacuum line.
z
Turn the ignition switch off.
z
Wait 10 s.
z
Turn the ignition switch to the ON
position (Engine running)
z
Run the engine for approx. 10 s.
z
Turn the ignition switch off.
z
Remove the vacuum hose on each
Yes Go to the next step.
No
If the vacuum line connected to a component
indicates that a fuel leak is present, install a
new component. Then go to Step 11.
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:35 AM
Page 102
© 2005 Mitchell Repair Information Company, LLC.
