NO.16 HIGH OIL CONSUMPTION/LEAKAGE [MZR-CD (RF Turbo)]


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


STEP	INSPECTION	RESULTS	ACTION
1	Verify followings: • Proper dipstick • Proper engine viscosity • Engine oil level Are all items okay?	Yes	Go to next step.
1		No	Service as necessary. Repeat Step 1.
2	Remove to necessary to inspect turbocharger. Note • Do not remove turbocharger. Inspect if turbocharger compressor wheel is bent, damaged, or interfering with housing on vehicle. Is there any problem?	Yes	Replace turbocharger.
2		No	Go to next step.
3	Inspect if turbocharger compressor wheel locknut is loose or has fallen down inside turbocharger. Is there any problem?	Yes	Replace turbocharger.
3		No	Go to next step.
4	Turn turbocharger compressor wheel by hand. Does wheel turn easily and smoothly?	Yes	Go to next step.
4		No	Replace turbocharger.
5	Inspect if turbocharger turbine wheel is damaged, cracked or interfering with housing on vehicle. Note • Inspect all fins on each turbine wheel. Is there any problem?	Yes	Replace turbocharger.
5		No	Go to next step.
6	Is any engine oil found inside turbocharger turbine housing?	Yes	Excessive amount of oil is found: Replace turbocharger. Small amount of oil is found: Wipe oil off of vehicle, then go to next step.
6		No	Go to next step.
7	Is any engine oil found inside turbocharger compressor housing?	Yes	Wipe oil off of vehicle, then go to next step.
7		No	Go to next step.
8	Is any engine oil found around oil pipes attached on turbocharger center housing?	Yes	If oil leaks from damaged pipe, replace oil pipe. Then, go to next step.
8		No	Go to next step.
9	Is any engine oil found inside air intake pipes or hoses?	Yes	Wipe engine oil off.
9	Is any engine oil found inside air intake pipes or hoses?	No	Turbocharger is okay. Install all parts removed in Step 2. Then go to next step.
10	Is engine compression correct? (See COMPRESSION INSPECTION [MZR-CD (RF Turbo)].)	Yes	Inspect oil leakage from outside of engine.
10		No	Inspect for following: • Damaged valve seat • Worn valve stem and valve guide • Worn or stuck piston ring • Worn piston, piston ring or cylinder Service as necessary.
11	Verify test results. • If okay, return to diagnostic index to service any additional symptoms. • If malfunction remains, replace PCM. (See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)