NO.16 HIGH OIL CONSUMPTION/LEAKAGE [MZR 2.0, MZR 2.5]

id0103e1802200

16

HIGH OIL CONSUMPTION/LEAKAGE

DESCRIPTION

•  Oil consumption is excessive.

POSSIBLE CAUSE

•  Improper dipstick

•  Improper engine oil viscosity

•  Engine internal parts malfunction

•  PCV valve malfunction

•  PCM malfunction

16	HIGH OIL CONSUMPTION/LEAKAGE
DESCRIPTION	• Oil consumption is excessive.
POSSIBLE CAUSE	• Improper dipstick • Improper engine oil viscosity • Engine internal parts malfunction • PCV valve malfunction • PCM malfunction

Diagnostic procedure

STEP	INSPECTION	RESULTS	ACTION
1	Inspect the following: • External leakage • Proper dipstick • Proper engine oil viscosity Are all items normal?	Yes	Go to the next step.
1		No	Repair or replace the malfunctioning part according to the inspection results. Repeat Step 1.
2	Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [MZR 2.0, MZR 2.5].) Is there any malfunction?	Yes	Replace the PCV valve and oil separator as a single unit. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5].)
2		No	Inspect the internal engine parts such as valves, valve guides, valve stem seals, cylinder head drain passage, and piston rings. Repair or replace the malfunctioning part according to the inspection results.
3	• Verify the test results. ― If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [MZR 2.0, MZR 2.5].) ― If a malfunction remains, inspect the related Service Information perform repair or diagnosis. • If the vehicle repaired, troubleshooting is completed. • If the vehicle not repaired or additional diagnostic information not available, replace the PCM. (See PCM REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5].)