Nissan Maxima Service and Repair Manual: Compression Pressure

On-Vehicle Service

CHECKING COMPRESSION PRESSURE

Nissan Maxima. CHECKING COMPRESSION PRESSURE

  1. Run the engine until it reaches normal operating temperature.
  2. Turn the ignition switch to OFF.
  3. Release fuel pressure. Refer to EC-592, "Inspection".
  4. Remove all six spark plugs.

    Refer to EM-12, "Removal and Installation".

  5. Attach a compression tester to No. 1 cylinder.
  6. Depress accelerator pedal fully to keep the electric throttle control actuator butterfly-valve wide open to maximize air intake flow.
  7. Crank the engine and record the highest gauge indication.
  8. Repeat the measurement on each cylinder (steps 5 - 7).

Nissan Maxima. CHECKING COMPRESSION PRESSURE

  • Always use a fully-charged battery to obtain specified engine speed.
  • If the engine speed is out of the specified range check the battery and recharge as necessary. Check the engine speed again with the battery properly charged.
  • If some cylinders have low compression pressure, pour a small amount of engine oil into the spark plug hole of the cylinder to re-check it for compression.
  • If the added engine oil improves the compression, piston rings may be worn out or damaged. Check the piston rings and replace if necessary
  • If the compression pressure remains at low level despite the addition of engine oil, the valves may be malfunctioning. Check the valves for damage. Replace the valve or valve seat accordingly.
  • If two adjacent cylinders have respectively low compression pressure and their compression remains low even after the addition of engine oil, cylinder head gaskets may be leaking, or a valve in adjacent cylinders may be damaged. Inspect and repair as required.
  • If the compression pressure is below the minimum value, check the valve clearances and parts associated with the combustion chamber (valve, valve seat, piston, piston ring, cylinder bore, cylinder head, cylinder head gasket). After the checking, measure the compression pressure again.
    Camshaft Valve Clearance
    Valve Clearance CHECKING NOTE: Perform inspection as follows after removal, installation or replacement of camshaft or valve related parts, or if there are unusual engine conditions rega ...

    Removal And Installation
    ...

    Other materials:

    Sunroof motor assembly
    Removal and Installation REMOVAL CAUTION: Before removing sunroof motor, check that glass lid is fully closed. After removing sunroof motor, do not attempt to rotate sunroof motor assembly as a single unit. Close glass lid. Remove the headlining. Refer to INT-33, "Removal a ...

    Symptom diagnosis
    CHARGING SYSTEM Symptom Table Symptom Reference Battery discharged Refer to CHG-2, "Work Flow (With EXP-800 NI or GR8-1200 NI)" or CHG-5, "Work Flow (Without EXP-800 NI or GR8-1200 NI)". The charge warning lamp does not illuminate ...

    Interior room lamp control system
    System Diagram System Description OUTLINE Interior room lamps* are controlled by interior room lamp timer control function of BCM. *:Front room/map lamp assembly, foot lamps and rear personal lamps (when front room/map lamp assembly switch is in DOOR position). Trunk room lamp is ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2026 Copyright www.nimainfo.com
    0.0063