Decreased vehicle exhaust emissions Mitsubishi Colt 5 (CJ)

Fuel systems and exhaust gas toxicity reduction (4G1 since 1995)
The fuel supply and emission control systems of SOHC engines with a carburetor are shown in Figure 3.13, SOHC engines with MPI injection (on front-wheel drive models up...

Fuel system and emission control of SOHC engines (4G9)
The fuel system and emission control system of SOHC engines with carburetor are shown in Fig. 4.7, and of SOHC engines with MPI injection - in Fig. 4.8. Figure 4.7. Fuel...

Exhaust gas toxicity reduction system for 4G1 and 4G9 engines
General information The exhaust gas toxicity reduction system consists of the following subsystems: crankcase ventilation systems; hot mix preparation systems; exhaust...

Engine crankcase ventilation system
General information The engine crankcase ventilation system prevents exhaust gases from entering the atmosphere. Fresh air is directed through the air filter via the...

Checking the crankcase ventilation valve
1. Disconnect the ventilation tube from the engine crankcase ventilation valve. 2. Remove the crankcase ventilation valve from the cylinder head cover. 3. Reconnect the...

Gasoline vapor recovery system
General information The mixture preparation system prevents the gasoline vapors generated in the fuel tank from escaping into the atmosphere. The fuel vapors are...

Checking the purge air control system
1. Disconnect the vacuum tube (with red stripes) from the throttle body and connect it to the vacuum pump (Figure 6.7a, b). Figure 6.7a. Checking the purge air control...

Checking the purge solenoid valve
Caution! Before removing, mark the vacuum hose to avoid confusion later. 1. Disconnect the vacuum hoses (with black and red stripes) from the solenoid valve. 2....

Exhaust gas recirculation system
General information The EGR system reduces nitrogen oxide (NOx) emissions. If the combustion temperature of the air-fuel mixture is high, a large amount of nitrogen...

Checking the EGR system of the 4G1 engine
1. Disconnect the vacuum tube (with a green stripe) from the throttle body and connect it to the vacuum pump (Figure 6.12). Figure 6.12. Checking the EGR system of the...

Checking the EGR system of the 4G9 engine
1. Disconnect the vacuum tube (with a green stripe) from the EGR solenoid valve and connect it to a hand vacuum pump (Figure 6.13). Figure 6.13. Check the vacuum on a...

Checking the EGR valve
1. Remove the EGR valve and check its flow capacity, absence of carbon deposits, etc. If necessary, clean the valve with a suitable solvent to ensure tight sealing of...

Throttle control cable and accelerator pedal
The throttle control cable and accelerator pedal are shown in Figure 6.16. Figure 6.16. Throttle control cable and accelerator pedal: 1 - Adjusting bolt; 2 - Cable...

Emission control system since 2001
Engine 4G1 1. The purge air control solenoid valve has been changed to a load-sharing valve, and the purge air inlet port is now located behind the throttle valve...

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