COMPRESSION

B2-10prose procedure

If the engine exhibits low power, poor fuel economy, or poor idle, check the following:

PREPARATION SST

Tool Number	Name	Usage
49 H010 103	Compression gauge	For Inspection of compression
49 H010 104	Adaptor	For Inspection of compression

49 H010 103

NameCompression gauge

UsageFor Inspection of compression

49 H010 104

NameAdaptor

UsageFor Inspection of compression

1
Verify that the battery is fully charged. Recharge it if necessary.
2
Warm up the engine to the normal operating temperature.
3
Stop the engine and allow it to cool for about 10 minutes.
4
Remove the all spark plugs.
5
Disconnect the distributor connector.
6
Install SST into the No.1 spark plug hole.
7
Fully depress the accelerator pedal and crank the engine.
8
Note the maximum gauge reading.
9
Check each cylinder as above.
10
If the compression in one or more cylinders is low, pour a small amount of clean engine oil into the cylinder and re-check the compression.
(1) If the compression increases, the piston, piston rings, or cylinder wall may be worn.
(2) If the compression stays low, the valve may be stuck or improperly seated.
(3) If the compression in adjacent cylinders stays low, the cylinder head gasket may be damaged or the cylinder head distorted.
11
Remove the SST.
12
Connect the distributor connector.
13
Install all spark plugs.

Specification	Value
Standard	1,334 {13.6, 193}-300kPa {kgf/cm2, psi}-rpm
Minimum	981 {10.0, 142}-300kPa {kgf/cm2, psi}-rpm
Maximum difference between cylinders	196 {2.0, 28}kPa {kgf/cm2, psi}

Standard

1,334 {13.6, 193}-300kPa {kgf/cm2, psi}-rpm

Minimum

981 {10.0, 142}-300kPa {kgf/cm2, psi}-rpm

Maximum difference between cylinders

196 {2.0, 28}kPa {kgf/cm2, psi}

Specification	Value
	15 - 22N·m

15 - 22N·m