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 ignition coils and all spark plugs, referring to REMOVAL .
4. Disconnect fuel injector wire harness at the connector.
5. Install special tool (Compression gauge) into spark plug hole.

   Special Tool 

   1. 09915-64512 
   2. 09915-64530 
   3. 09915-67010 
      Fig 1: Installing Special Tool (Compression Gauge) Into Spark Plug Hole

      Courtesy of SUZUKI OF AMERICA CORP.
6. 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 2: Depressing Accelerator Pedal

   Courtesy of SUZUKI OF AMERICA CORP.
7. Crank engine with fully charged battery, and read the highest pressure on compression gauge.
   NOTE:

   • For measuring compression pressure, crank engine at least 250 r/min by using fully charged battery.
   • If measured compression pressure is lower than limit value, check installation condition of special tool.

   Compression pressure 

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

   Limit: 1100 kPa (11.0 kgf/cm ²  , 158.0 psi) 

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

8. Carry out Steps  5 through  7 on each cylinder to obtain 4 readings.
9. After checking, install spark plugs and ignition coils, referring to INSTALLATION .
10. Connect injector wire harness at connector.
11. Install air cleaner assembly, referring to INSTALLATION .