Kawasaki Ninja Service Manual: Cylinder Compression Measurement

Kawasaki Ninja Service Manual / Engine Top End / Cylinder Head / Cylinder Compression Measurement

NOTE

Use the battery which is fully charged.

Special Tools - Compression Gauge, 20 kgf/cm²: 57001-221 Compression Gauge Adapter, M10 × 1.0: 57001-1601 L-Shape Hose [C]: 57001-1606

Cylinder Compression Measurement


Cylinder Compression Usable Range: 1 099 1 668 kPa (11.2
17.0 kgf/cm²,
159 242 psi) at 320 r/min (rpm)


The following table should be consulted if the obtainable compression reading is not within the usable range.

Problem Diagnosis Remedy (Action)
Cylinder compression is higher than usable range Carbon accumulation on piston and in combustion chamber possibly due to damaged valve stem oil seal and/or damaged piston oil rings (This may be indicated by white exhaust smoke). Remove the carbon deposits and replace damaged parts if necessary.
Incorrect cylinder head gasket thickness Replace the gasket with a standard part.
Cylinder compression is lower than usable range Gas leakage around cylinder head Replace damaged gasket and check cylinder head warp
Bad condition of valve seating Repair if necessary.
Incorrect valve clearance Adjust the valve clearance.
Incorrect piston/cylinder clearance Replace the piston and/or cylinder.
Piston seizure Inspect the cylinder and replace/repair the cylinder and/or piston as necessary.
Bad condition of piston ring and/or piston ring grooves Replace the piston and/or the piston rings.
Cylinder Head
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Cylinder Head Removal
Remove: Thermostat Housing (see Thermostat Removal in the Cooling System chapter) Exhaust Pipe (see Exhaust Pipe Removal) Camshafts (see Camshaft Removal) Heat Insulation Plate [A] (see E ...

Other materials:

Tie-Rod and Rocker Arm Bearing Installation
Replace the needle bearings [A] and oil seals with new ones. Apply plenty of grease to the lips of the oil seals. Install the needle bearings and oil seals position as shown in the figure. Screw the needle bearing driver into the driver holder. Insert the needle bearing driver into th ...

Alternator Cover Removal
Remove: Upper Fairing Assembly (see Upper Fairing Assembly Removal in the Frame chapter) Air Cleaner Housing (see Air Cleaner Housing Removal in the Fuel System (DFI) chapter) Bolt [A] Bring the heat insulator plate [B] forward to remove the alternator lead connector. Clear the p ...

Parts Removal/Installation
WARNINGGasoline is extremely flammable and can be explosive under certain conditions. Turn the ignition switch OFF. Do not smoke. Make sure the area is well-ventilated and free from any source of flame or sparks; this includes any appliance with a pilot light. NOTICE ...