Nissan Juke Service and Repair Manual : Engine smokes when revved

Description

CHART 20: ENGINE SMOKES WHEN REVVED

Diagnosis Procedure

1.CHECK ENGINE OIL

Check the grade of engine oil. Refer to LU-25, "Inspection".

Is the inspection result normal? YES >> GO TO 2.

NO >> Replace engine oil. Refer to LU-26, "Refilling".

2.CHECK ENGINE OIL LEVEL

Is the engine oil level correct? Yes or No Yes >> GO TO 3.

No >> Top up the oil.

3.CHECK ECM POWER SUPPLY AND GROUND CIRCUIT

Check ECM power supply and ground circuit. Refer to EC-908, "Component Inspection".

Is the inspection result normal? YES >> GO TO 4.

NO >> Repair or replace harness or connector.

4.CHECK WIRING HARNESS

Visually check the condition of the engine wiring harness.

Is the inspection result normal? YES >> GO TO 5.

NO >> Repair or replace harness or connector.

5.CHECK MASS AIR FLOW SENSOR

Check mass air flow sensor. Refer to EC-902, "Component Inspection".

Is the inspection result normal? YES >> INSPECTION END

NO >> Repair or replace.

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