Engine Lubrication System: Other Nissan Quest IV

DISCONNECTING FUEL PIPING

1. Before starting work, check no fire or spark producing items are in the work area.
2. Release fuel pressure before disconnecting and disassembly.
3. After disconnecting pipes, plug openings to stop fuel leakage.

Special Service Tool

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Tool number (Kent-Moore No.) Tool name Description ST25051001 (J-25695-1) Oil pressure gauge Measuring oil pressure Maximum measuring range: 2, 452 kPa (25 kg/cm 2 , 356 psi) ST25052000 (J-25695-2) Hose Adapting oil pressure gauge to oil pan (upper) KV10115801 (J-38956) Oil filter wrench Removing oil filter 64.3 mm (2.531 in)

Scheme 16

Scheme 17

Commercial Service Tool

Tool name Description Power tools Loosening nuts and bolts Tube presser Pressing the tube of liquid gasket Deep socket Removing and installing oil pressure switch 27 mm (1.06 in)

Scheme 18

ENGINE OIL LEVEL

Note. Before starting engine, put vehicle horizontally and check the engine oil level. If engine is already started, stop it and allow 10 minutes before checking.

Scheme 19

1. Pull out oil level gauge and wipe it clean.
2. Insert oil level gauge and check the engine oil level is within the range shown in the figure below.
3. If it is out of range, adjust it.

ENGINE OIL APPEARANCE

1. Check engine oil for white turbidity or heavy contamination.
2. If engine oil becomes turbid and white, it is highly probable that it is contaminated with engine coolant. Repair or replace damaged parts.

ENGINE OIL LEAKAGE

Check for engine oil leakage around the following areas

1. Oil pans (lower and upper)
2. Oil pan drain plug
3. Oil pressure switch
4. Oil temperature sensor
5. Oil filter
6. Oil cooler
7. Camshaft sprocket cover (bank 1 and bank 2)
8. Intake valve timing control solenoid valve (bank 1 and bank 2)
9. Mating surface between cylinder head and rocker cover
10. Mating surface between front timing chain case and rear timing chain case
11. Mating surface between rear timing chain case and cylinder head
12. Mating surface between rear timing chain case and cylinder block
13. Mating surface between rear timing chain case and oil pan (upper)
14. Mating surface between cylinder block and cylinder head
15. Crankshaft oil seals (front and rear)
16. Camshaft position sensor (PHASE)

OIL PRESSURE CHECK

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Scheme 21

1. Check the engine oil level.
2. Remove splash guard (RH). Refer to " «EXPLODED VIEW»(ref-672623-S22478781722014112400000) ".
3. Disconnect harness connector at oil pressure switch (2), and remove oil pressure switch using deep socket (commercial service tool). CAUTION: Never drop or shock oil pressure switch.
4. Install the oil pressure gauge [SST: ST25051001 (J-25695-1)] (A) and hose [SST: ST25052000 (J-25695-2)] (B).
5. Start the engine and warm it up to normal operating temperature.
6. Check the engine oil pressure with engine running under no-load. NOTE: When the engine oil temperature is low, the engine oil pressure becomes high. Engine oil pressure: Refer to " «ENGINE OIL PRESSURE»(ref-672629-S26464442292014112400000) ". If difference is extreme, check engine oil passage and oil pump for engine oil leakage.
7. After the inspections, install oil pressure switch as follows: Remove old liquid gasket from oil pressure switch and the mating surface. Apply liquid gasket and tighten oil pressure switch to the specification. Use Genuine RTV Silicone Sealant or equivalent. Refer to " «RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS»(ref-672611-S40047121162014112400000) ". Tightening torque: Refer to " «EXPLODED VIEW»(ref-672620-S21429898042014112400000) ". After warming up engine, check there is no leakage of engine oil with running engine.

Oil Cooler

Check oil cooler for cracks. Check oil cooler for clogging by blowing through engine coolant inlet. If necessary, replace oil cooler.

Relief Valve

Inspect relief valve for movement, cracks and breaks by pushing the ball. If replacement is necessary, remove relief valve by prying it out with a suitable tool. Install a new relief valve in place by tapping it.

Engine Oil Pressure

Oil Pump

Regulator Valve