1989-Mitsu-Factory Manual · fuel system · страница 23 из 53 · Открыть оригинал PDF ↗
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Rotation direction of adjusting screw and fast idle speed
| Adjusting screw di- rection | Valve opening | Fast idle speed |
|---|---|---|
| Clockwise | Large | Increases |
| Counterclockwise | Small | Decreases |
Таблица в оригинале
(7) Connect the vacuum hose removed in step (3) to the choke
opener and check that the choke opener cancels fast idle.
AUXILIARY ACCELERATION PUMP Nw=YAAb
(1) Remove the air cleaner cover.
(2) Check to be sure that the engine coolant temperature is
30°C (86°F) or lower, and then check according to the
steps in the table below.
| Step | Check condi- tions | Vacuum hose Vacuum | Pump nozzle |
|---|---|---|---|
| 1 | With the en- gine idling, dis- connect the black vacuum hose from the carburetor Aux- iliary Accelera- tor Pump. | Vacuum is felt when the hose end is covered by a finger. | Fuel is sprayed from the nozzle when the hose is disconnected. |
| 2 | Warm-up the engine until the temperature of the engine coolant reaches 50°C (122°F) or higher. | Vacuum cannot be felt by the finger. | - |
Таблица в оригинале
(3) If the change of the vacuum is incorrect, check the therm0
valve for the Auxilian/ Accelerator Pump.
If vacuum is normal but fuel is not sprayed from the
nozzle, clean the carburetor’s fuel passage.
THERM0 VALVE (FOR AUXILIARY ACCELERATOR PUMP CONTROL) NWFZA‘tL
(1) Disconnect the vacuum hose (black) from the therm0
valve and connect a manual vacuum pump to the therm0
valve.
| (2) Apply a vacuum of 66 kPa (10.0 | psi) to the therm0 valve. |
|---|---|
| When engine is cold [coolant temperature 30°C (86°F) or lower] | Vacuum is not applied (leakaae). |
| After engine warm-up [coolant temperature 50°C (122°F) or higher] | Vacuum is applied (no leakage). |
Таблица в оригинале
(3) If incorrect, replace the therm0 valve.
Caution
1. Do not use a wrench or similar tool at the resin part
when removing or installing the therm0 valve.
2. When installing, apply a coating of an anaerobic sealant
to the threaded part, and then tighten at a torque of
20-35 Nm (14-25 ftlbs.).
Оригинальная страница руководства
