HAIMA 7 - Page 248

General Precautions of EFI System Maintenance
F-112
S/N Operating Steps Test Result Follow-up Step
8
Inspect whether or not the ignition sequence and the ignition
timing of engine is compliant with specifications.
Yes Next Step
No
Ignition timing
to be inspected
and repaired
9
Inspect whether or not the exhaust pipe is able to exhaust air
smoothly.
Yes Next Step
No
Exhaust pipe to
be repaired or
replaced
10
Link up the adapter of the electronic injection system, turn on
the ignition switch, and examine whether or not the power
supply for Pins 12#, 63#, 44# and 45# is normal. Inspect
whether or not the grounding of Pins 79#, 17#, 35#, 36#, 51#,
53#, 80# and 61# is normal.
Yes
Diagnostic
Help
No
Corresponding
lines to be
inspected and
repaired
13. Poor acceleration with poor performance.
General malfunction Locations: 1. Water-containing Fuel; 2. Air Flow Meter and Throttle Opening Sensor; 3.
Spark Plug; 4. Ignition Coil; 5. Throttle Body; 6. Air Intake Passage; 7. Fuel Injector; 8. Ignition Timing; 9.
Exhaust pipe
General Diagnostic Flow:
S/N
Operating Steps
Test Result
Follow
-
up Step
1
Inspect whether or not clutch skidding
, low tire air pressure,
dragging brake, wrong tire size, and incorrect 4-tyre
alignment, etc exist.
Yes
Repair
No Next Step
2 Inspect whether or not the air filter is blocked.
Yes
Air intake
system to be
inspected and
repaired
No
Next Step
3
Link up the fuel pressure gauge (the linking point to be on the
front end of the oil inlet pipe for the fuel rail assembly), start
the engine, and examine whether or not the fuel pressure is at
about 400kPa under the idling speed operating condition.
Remove vacuum tube on fuel pressure regulator, verify
whether pressure is about 450kpa.
Yes Next Step
No
Fuel system to
be inspected and
repaired
4
Pull off the cylinder connection from one of the cylinders,
connect up the spark plug, cause the sparkling-plug electrode
to be about 5mm away from the engine body, start the engine,
and examine whether or not the strength of high voltage flame
is normal.
Yes Next Step
No
Ignition system
to be inspected
and repaired
5
Inspect spark plugs of respective cylinders, and observe
whether or not their models and clearances are compliant with
specifications.
Yes
Next Step
No
To be adjusted
or replaced