Compression Check

Check compression pressure on all 4 cylinders as follows:

1. Warm up engine.
2. Stop engine after warming up.
   NOTE: After warming up engine, place transmission gear shift lever in "Neutral" (shift selector lever to "P" range for A/T model), and set parking brake and block drive wheels.
3. Remove engine cover referring to ENGINE COVER REMOVAL AND INSTALLATION .
4. Disconnect ignition coil couplers.
5. Disconnect ignition coils (1).
6. Remove all spark plugs (2).
   Fig 1: Removing Ignition Coils & Spark Plugs

   Courtesy of SUZUKI OF AMERICA CORP.
7. Disconnect fuel injector wire harness at the coupler.
8. Install special tool (Compression gauge) into spark plug hole.

   Special Tool 

   1. 09915-64510-001 
   2. 09915-64510-002 
   3. 09915-64530 
   4. 09915-67010 
      Fig 2: Installing Compression Gauge

      Courtesy of SUZUKI OF AMERICA CORP.
9. Disengage clutch (to lighten starting load on engine) for M/T vehicle, and depress accelerator pedal all the way to make throttle fully open.
   Fig 3: Disengaging Clutch

   Courtesy of SUZUKI OF AMERICA CORP.
10. Crank engine with fully charged battery, and read the highest pressure on compression gauge.
    NOTE: For measuring compression pressure, crank engine at least 250 RPM by using fully charged battery.

    Compression pressure 

    Standard: 1400 kPa (14.0 kg/cm ²  , 199.0 psi) 

    Limit: 1200 kPa (12.0 kg/cm ²  , 170.0 psi) 

    Max. difference between any two cylinders: 100 kPa (1.0 kg/cm ²  , 14.2 psi) 

11. Carry out Steps  8),  9) and  10) on each cylinder to obtain 4 readings.
12. After checking, install spark plugs (2) and ignition coils (1).
    Fig 4: Installing Spark Plugs & Coils

    Courtesy of SUZUKI OF AMERICA CORP.
13. Install ignition coil couplers.
14. Connect injector wire harness at coupler.
15. Install engine cover referring to ENGINE COVER REMOVAL AND INSTALLATION .