gas type NISSAN 300ZX 1984 Z31 Maintenance Workshop Manual

ENGINE MAINTENANCE
Checking and Replacing Spark Plugs
CHECKING AND REPLACING SPARK PLUGS
VG30E
Standard type BCPRGES-11
1 Disconnect spark plug wire at boot Do not
pull on the wires
VG30ET
BCPRGE-11 2. Remove spark plugs with spark plug wrench.
3. After cleaning spark plugs, inspect insulator
for cracks or chips,
gasket for damage or
deterioration and electrode for wear and
burning.
If they are excessively worn, replace
with new spark plugs.
Hot type I BCPRSESI 1
4. Check spark plug gap
BCPR5E-I 1
Slde elecrrode ~~~~
Cold type
Gap 1 0.1 1 mm (0 039 - 0 043 in)
BCPR7ES-11
BCPR7E-11
MA-1 2

ENGINE MAINTENANCE
Checking Exhi
48,000 krn (30,000 miles) OR 24 MONTHS
SERVICE
Exhaust gas sensor should be checked after 48,000
km (30,000 miles) or 24 months of operation
After vehicle has been operated for
48,000 km
(30,000 miles), exhaust gas sensor warning lamp
will come on to indicate that sensor should
be
inspected
Digital type
t
After inspection, disconnect warning lamp harness
connector so that warning lamp will not come on
thereafter.
SMA792A
1st Gas Sensor
MA-1 5
.-I