1989-Mitsu-Factory Manual · emission system · страница 17 из 38 · Открыть оригинал PDF ↗
EXHAUST GAS RECIRCULATION (EGR) SYSTs$ll INSPECTION
(1) Disconnect the vacuum hose (green stripe) from the
carburetor throttle body and connect a hand vacuum
pump to the vacuum hose.
(2) Check the following both when the engine is cold [engine
coolant temperature 45°C (113°F) or less] and when it is
hot [engine coolant temperature 85 to 95°C (185 to 205”F)l
When engine is cold
| Vacuum | Normal condition | |
|---|---|---|
| Apply vacuum | 3,500 rpm | Vacuum leaks - from therm0 valve into at- mosphere |
Таблица в оригинале
When engine is hot
EGR VALVE INSPECTION
N25lcKh
(1) Remove the EGR valve and check it for sticking, deposit of
carbon, etc. If such condition exists, clean with adequate
solvent to ensure tight valve seat contact.
(2) Connect a hand vacuum pump to the EGR valve.
(3) Apply a vacuum of 67 kPa (19.7 in.Hg) and check air
tightness.
(4) Blow in air from one passage of the EGR to check
condition as follows.
| Vacuum | Normal condition |
|---|---|
| 8 kPa (2.4 in.Hg) or less | Air does not blow through |
| 23 kPa (6.7 in.Ha) or more | Air blows through |
Таблица в оригинале
Caution
When installing the EGR, use a new gasket and tighten to 7
to 11 Nm (5 to 8 ftlbs.)
VACUUM REGULATOR VALVE (VRV) INSPECTION
Nz51a
(1) Disconnect the vacuum hose (white stripe) from the
device box and connect a hand vacuum pump to the
device box.
(2) Apply a vacuum of 53 kPa (15.7 in.Hg) and check VRV
condition as follow.
Engine state Normal condition
Stopped Vacuum leaks
3.500 ipm Vacuum holds
Оригинальная страница руководства
