Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMITSUBISHI2005LANCER L4-2.4L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTEMISSION CONTROL SYSTEMSEVAPORATIVE EMISSIONS SYSTEMTESTING AND INSPECTIONPURGE FLOW CHECK
2005 Mitsubishi Lancer L4-2.4L SOHC
Purge Flow Check
2005 Mitsubishi Lancer L4-2.4L SOHCSECTION Purge Flow Check
PURGE CONTROL SYSTEM CHECK (PURGE FLOW CHECK)
Required Special Tool:
MB995061: Purge Flow Indicator
1. Disconnect the purge hose from the evaporative emission (EVAP) purge solenoid and connect special tool MB995061 between the EVAP purge solenoid and the purge hose.
2. Before inspection, set the vehicle in the following conditions:
- Engine coolant temperature: 80 - 95°C (176 - 203°F)
- Lights, electric cooling fan and accessories: OFF
- Transaxle: P range
NOTE: Vehicles for Canada, the headlight, taillight, etc. remain lit even when the lighting switch is in "OFF" position but this is no problem for checks.
3. Run the engine at idle for more than four minutes.
4. Check the purge flow volume when engine is revved suddenly several times.
Standard value: Momentarily 20 cu.cm/s (2.5 SCFH) or more.
5. If the purge flow volume is less than the standard value, check it again with the vacuum hose disconnected from the EVAP canister. If the purge flow volume is less than the standard value, check the vacuum port and the vacuum hose for clogging. Also check the EVAP purge solenoid. If the purge flow volume is at the standard value, replace the EVAP canister.
Purge Control System Check (Purge Flow Check):
Purge Control System Check (Purge Flow Check):
Required Special Tool:
MB995061: Purge Flow Indicator
1. Disconnect the purge hose from the evaporative emission (EVAP) purge solenoid and connect special tool MB995061 between the EVAP purge solenoid and the purge hose.
2. Before inspection, set the vehicle in the following conditions:
- Engine coolant temperature: 80 - 95°C (176 - 203°F)
- Lights, electric cooling fan and accessories: OFF
- Transaxle: P range
NOTE: Vehicles for Canada, the headlight, taillight, etc. remain lit even when the lighting switch is in "OFF" position but this is no problem for checks.
3. Run the engine at idle for more than four minutes.
4. Check the purge flow volume when engine is revved suddenly several times.
Standard value: Momentarily 20 cu.cm/s (2.5 SCFH) or more.
5. If the purge flow volume is less than the standard value, check it again with the vacuum hose disconnected from the EVAP canister. If the purge flow volume is less than the standard value, check the vacuum port and the vacuum hose for clogging. Also check the EVAP purge solenoid. If the purge flow volume is at the standard value, replace the EVAP canister.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.