Suzuki Grand Vitara SQ416/SQ420/420WD

since 1998 of release

Repair and car operation

Suzuki Grandee of Wetar
+ General information
+ Maintenance and greasing
+ Heater, ventilation and conditioner
+ Steering
+ Suspension bracket
+ Wheels and tires
+ Forward driving shaft/bearing of a shaft. Oil epiploon
+ Driveshafts
+ Brake system
- Engines
   - Mechanical part of the G16 engine
      + General description
      - Routine maintenance
         Compression check
         Check of depression of the engine
         Check of pressure of oil
         Klapanny gap
         Filtering element of the air filter
         Cover of a head of cylinders
         Case of butterfly valves and inlet collector
         Collector of the fulfilled gases
         Belt of a drive of the gas-distributing mechanism and the tension device for a belt
         Oil pan and grid of the oil pump
         Oil pump
         Valve yoke, axis of yokes and cam-shaft
         Valves and head of the block of cylinders
      + piston Rod, piston rings, rods and cylinders
      Special tool
      Necessary service materials
      Technical characteristics of the rotating moment of an inhaling
   + Mechanical part of the J20 engine
   + engine Cooling
+ Fuel system
+ ignition System
+ start System
+ release System
+ Transmissions
+ Coupling
+ Transfer
+ Forward and back differentials
+ Windows, mirrors, locks and security measures. Immobilizer
+ Electric equipment


Routine maintenance

Compression check

Pressure of compression on all four cylinders is checked as follows.


  1. Warm up the engine.
  2. After a warming up stop the engine.

After a warming up of the engine put the gear shifting lever on "Neutral" (for And/t models put the gear shifting lever on a range of "R"), both establish the parking brake and block driving wheels.

  1. Disconnect a connector of a bunch of wires of a fuel injector.
  1. Remove knots of the coil of ignition and all spark plugs relating to a spark plug and the unit of the coil of ignition in Head System of ignition.
  1. Establish the special tool for compression measurement in cylinders (компрессиметр) in a spark plug opening.
    • Special tool:
      • (А): 09915-64510-001
      • (В): 09915-64510-002
      • (С): 09915-64530
      • (D): 09915-67010
  1. Switch off coupling (to reduce initial load of the engine) for M/t models, and press a pedal of management of supply of fuel against the stop completely to open a butterfly valve.
  1. Start the engine with completely charged accumulator and read the maximum instrument of pressure on a kompressimeter.
  2. компрессиметре

To measure pressure of compression, start the engine, at least, on 250 revolutions per minute, by means of completely charged accumulator.

Pressure of compression


Pressure of compression

The normal

1400 kPas (14.0 kg/cm2, 199.0 пси)

The limiting

1200 kPas (12.0 kg/cm2, 170.0 пси)

The maximum deviation between two cylinders

100 kPas (1.0 kg/cm2, 14.2 пси)

  1. Execute item 5-7 on each cylinder to read four instruments.
  1. After check insert spark plugs and knots of the coil of ignition and reliably connect a connector of a bunch of wires of a fuel injector.