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EFI SYSTEM — Troubleshooting
FI-11
OK CONTINUED FROM PAGE FI-10
CHECK SPARK PLUGS
Standard: 0.8 mm (0.031 in.)
HINT: Check compression pressure and
valve clearance if necessary.
1. Spark plugs
NO
2. Compression pressure
Minimum: 8.0 kg/cm2
(114 psi, 785 kPa)
at 200 rpm
3. Valve clearance (Hot)
Standard: IN 0.20 mm (0.008 in.)
EX 0.35 mm (0.014 in.)
1. Injector(s) — shorted or leaking
BAD
2. Injector wiring — short circuited
All
3. Cold start injector — leakage
Plugs
(See page FI-50)
WET
4. Cold start injector time switch
(See page FI-72)
OK
CHECK FUEL SUPPLY TO INJECTOR
1. Fuel line — Leakage — deformation
1. Fuel in tank
BAD
2. Fuse
2. Fuel pressure in fuel line
3. Fuel pump (See page FI-44)
(1) Connect ter B and FP of
4. Fuel filter
the check connector.
5. Fuel pressure regulator (See page FI-53)
(2) Fuel pressure at fuel hose of fuel
filter can be felt. (See page FI-45)
OK
CHECK FUEL PUMP SWITCH IN AIR
Air flow meter (See page FI-62)
FLOW METER
BAD
Check continuity between terminals FC
and El while measuring plate of air flow
meter is open.
OK
CHECK IGNITION TIMING
1. Connect terminals TE1 and El of the
NO
check connector.
2. Check ignition timing.
Standard: 7°BTDC A
idle
( w/ connected TE1 and El)
OK
CHECK EFI ELECTRONIC CIRCUIT
USING VOLT/OHMMETER
BAD
(See page FI-27)
Ignition timing — Adjust (See page EM-1 1)
1. Wiring connection
2. Power to ECU
(1) Fusible links
(2) Fuses
(3) EFI main relay (See
3. Air flow meter (See pagE
4. Water temp. sensor (See
5. Air temp. sensor (See pa
6. Injection signal circuit
(1) Injector wiring
(2) ECU (See page FI-7'