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 EVOLUTION L4-2.0L DOHC TURBOREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTEMISSION CONTROL SYSTEMSEXHAUST GAS RECIRCULATIONEGR VACUUM LINETESTING AND INSPECTION
2005 Mitsubishi Lancer Evolution L4-2.0L DOHC Turbo
EGR Vacuum Line: Testing and Inspection
2005 Mitsubishi Lancer Evolution L4-2.0L DOHC TurboSECTION Testing and Inspection
This article has been updated per manufacturer's TSB #06-13-012
EGR Port Vacuum Check
1. Disconnect the vacuum hose from the throttle body EGR vacuum nipple and connect a hand vacuum pump to the nipple.
2. Start the engine.
3. Measure engine vacuum at 2500 r/min.
Standard value: 51 kPa (15 in. Hg) or more
4. Reset the vacuum pump to "0" (release vacuum).
5. Using a stop watch, measure how long it takes for the vacuum gauge to reach 51 kPa (15 in. Hg) or more.
Standard value: 1.0 second or less
6. If it takes more than 1.0 second for the gauge to reach 51 kPa (15 in. Hg), the EGR vacuum port may be restricted and should be cleaned.
EGR Port Vacuum Check
1. Disconnect the vacuum hose from the throttle body EGR vacuum nipple and connect a hand vacuum pump to the nipple.
2. Start the engine.
3. Measure engine vacuum at 2500 r/min.
Standard value: 51 kPa (15 in. Hg) or more
4. Reset the vacuum pump to "0" (release vacuum).
5. Using a stop watch, measure how long it takes for the vacuum gauge to reach 51 kPa (15 in. Hg) or more.
Standard value: 1.0 second or less
6. If it takes more than 1.0 second for the gauge to reach 51 kPa (15 in. Hg), the EGR vacuum port may be restricted and should be cleaned.
RENDER: 1.0x
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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.