Maintenance Manual for J2 Sedan
Mechanical Part of Engine
ly
the engine and
stop it.
the fuel
See
Fuel
e”.
See
cover. See “Intake manifold”.
essure
the ignition switch to the
ART”
the engine. After the instrument finger appears stable, read compression pressure and engine speed.
Perform these steps to check other cylinders.
■ Standard pressure: 1200±100
■ Tolerable
difference
≤98kPa
Attention:
■ It is required to obtain the specified engine speed always by the battery which is full
■
lve clearance and
relevant
valve, valve seat,
cylinder bore, cylinder head and gasket) if the
compression pressure is less than the minimum
value. Repeat measurement of compression pressure after the check.
If the pressures in some cylinders are low, add some engine oil to the spark plug holes of such
cylinders and then inspect again.
■
be worn or
f the
essure
fter
oil is
piston ring and replace if necessary.
■ The valv
have faul
still low after
ne
oil. Check whether the valve is damaged.
Replace the damaged valve or valve seat.
■
are low and even keep low after adding engine oil. Replace cylinder gasket.
inspection,
the dismounted parts.
Start engine, confirm that the engine runs smoothly.
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