Compression Check

Check compression pressure on all 6 cylinders as follows:

1. Warm up engine.
2. Stop engine after warming up.
3. Remove ignition coil covers and disconnect ignition coil harness couplers.
4. Remove all ignition coils (1) and spark plugs (2) referring to SPARK PLUG REMOVAL & INSTALLATION .
   Fig 1: Removing All Ignition Coils & Spark Plugs

   Courtesy of SUZUKI OF AMERICA CORP.
5. Remove surge tank cover.
6. Disconnect fuel injector wire harness at connector.
7. Install special tool (Compression gauge) into spark plug hole.

   Special tool 

   (A):  09915-64510

   (B):  09915-64530

   (C):  09915-67010

   Fig 2: Installing Compression Gauge Into Spark Plug Hole

   Courtesy of SUZUKI OF AMERICA CORP.
8. 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 (M/T Vehicle) & Depressing Accelerator Pedal

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9. 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 - 1600 kPa (14.0 - 16.0 kg/cm² , 199.0 - 227.5 psi)

   Limit:  1300 kPa (13.0 kg/cm² , 185.0 psi)

   Max. difference between any two cylinders:  100 kPa (1.0 kg/cm² , 14.2 psi)

10. Carry out steps  7,  8 and  9 on each cylinder to obtain 6 readings.