6.
Connect the negative terminal of the battery and measure the
compression pressure.
Note:
In order to ensure a cranking speed of more than
250
rpm,
use a fully charged battery.
Turn the starter before measuring the compression
pressure in order to eliminate the foreign matter inside the
cylinder.
Insert a compression gauge into the spark plug hole.
Crank the engine with the starter and measure the
compression pressure.
Standard:
1225
kPa
(12.5
kgflcm2)
[I78
psi]
Limit:
883
kPa
(9.0
kgflcm2)
[I28
psi]
Measure the compression pressure of all four cylinders
and inspect the difference.
Limit of pressure difference between cylinders:
98
kPa
(1.0
kgflcm2)
[I4
psi]
If some cylinders have a compression pressure less than
the limit, or if their pressure differences are more than the
limit, add a small amount of engine oil from the spark plug
hole, and repeat the operations (1) to (3) above.
(a) If the pressure goes up by adding oil, there may be
wear or damage on the piston ring or the cylinder
wall.
(b) If the pressure remains low even after oil is added,
there may be a burnout of the valve, defect in valve
contact, or pressure leak from the gasket.
Install the spark plugs.
T
=
18
N-m
(183
kgf-cm)
113.2
ft-lbfl
To Next Page
Loading...
Need help?
General
