Near cylinder head
Cleaning pipe
Near the intake manifold
II. Examination of Positive Crank-
case Ventilation System
1. Remove the PCV valve
Remove the PCV hose and then the PCV check valve.
2. Install the cleansing hose onto the PCV valve’s side connecting to the cylinder head.
3. Examine the PCV’s working condition.
(1) Blow the air into the PCV valve from the side near the cylinder cover(Fig 282a), and check whether the airflow is
smooth. Note: Do not inhale the air through the PCV valve because the petro chemical matter in the PCV valve is harmful.
(2) Blow the air through the PCV valve from the side near the inlet chamber(Fig 282b), and check whether the airflow is
smooth. If its working condition does not comply with the specified requirements, you shall replace the PCV valve.
4. Remove the cleansing hose from the PCV valve and reinstall the PCV valve.
5. Visually inspect whether the following parts have any crack, leakage or damage: hoses,
connectors, washers, etc. shown in Fig. 283. If so, you shall troubleshoot them.
III.Examination of Evaporative Emission Control System
1. Visually examine whether there is any deformation, crack, leakage or damage in the fuel tank, tank cap, gasket, pipes or
connectors (Fig. 284). If necessary, you shall repair or replace the tank cover.
Fig. 283 Examine hoses, connectors, washers, etc. visually.
Fig. 282 Blow the air into the PCV valve(b) from the side near
the cylinder head(a)
Inhale the air through the PCV valve(a) from the side near the
intake manifold(b)
Fig. 284 Examine fuel tank, tank cover, pipes and connectors visually
2. Examine the active carbon canister (See Fig. 285)
(1) Remove the active carbon canister, and check whether there
is any crack or damage with its case.
(2) Check the following items: whether the filter in the carbon
canister is blocked; whether the check valve is blocked; Use low
pressure compressed air blow to the fuel tank system. whether
the air can flow out smoothly from other pipes. If any problem is
found, you shall replace this active carbon canister.
(3) Cleanse the filter in the active carbon canister.
125
Содержание JL481Q
Страница 1: ......
Страница 9: ...5 Fig 3 Components Assembly Drawing of MR479Q MR479QA Engine ...
Страница 10: ...6 Fig 4 MR479Q MR479QA Engine and Its Power System ...
Страница 11: ...7 Fig 5 Assembly Drawing of Engine and Its Auxiliaries MR479Q MR479QA ...
Страница 12: ...8 Fig 6 Electronic Control Fuel Injection System in Engine MR479Q MR479QA ...
Страница 13: ...9 Fig 7 Front view of Engine JL481Q MR481QA ...
Страница 14: ...10 Fig 8 Sectional elevation of Engine JL481Q MR481QA ...
Страница 15: ...11 Fig 9 Electronic Control Fuel Injection System in Engine JL481Q MR481QA ...
Страница 21: ...17 Fig 13 Exterior Feature of JL481Q Engine Power Me N m Torque Pe Kw ge g kwh Fuel Consumption Ratio ...