NO.16 HIGH OIL CONSUMPTION/LEAKAGE [MZI-3.7]
NO.16 HIGH OIL CONSUMPTION/LEAKAGE (MZI-3.7) DETECTION CONDITIONS AND
POSSIBLE CAUSES
DIAGNOSTIC PROCEDURE
NO.16 HIGH OIL CONSUMPTION/LEAKAGE (MZI-3.7) DIAGNOSTIC PROCEDURE
13
{
If malfunction remains, inspect related Service Bulletins and/or On-line Repair
Information and perform repair or diagnosis.
z
If vehicle is repaired, troubleshooting completed.
z
If vehicle is not repaired or additional diagnostic information is not available,
replace the PCM.
(See
PCM REMOVAL/INSTALLATION [MZI-3.7]
.)
16
HIGH OIL CONSUMPTION/LEAKAGE
DESCRIPTION
Oil consumption is excessive.
POSSIBLE CAUSE
z
PCV valve malfunction
z
Improper dipstick
z
Improper engine oil viscosity
z
Engine internal parts malfunction
STEP
INSPECTION
RESULTS
ACTION
1
Remove and shake the
PCV valve.
Does the PCV valve
rattle?
Yes
Go to the next step.
No
Replace the PCV valve.
2
Inspect for the
following:
z
External leakage
z
Proper dipstick
z
Proper engine oil
viscosity
Are all items normal?
Yes
Inspect the internal engine parts such as valves, valve guides,
valve stem seals, cylinder head drain passage, and piston
rings.
No
Service if necessary.
Repeat Step 2.
z
Verify test results.
{
If normal, return to diagnostic index to service any additional symptoms.
(See
SYMPTOM DIAGNOSTIC INDEX [MZI-3.7]
.)
2008 Mazda CX-9 Grand Touring
2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:10:05 AM
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© 2005 Mitchell Repair Information Company, LLC.
