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 MANUALSMITSUBISHI2017MIRAGE G4 ES, AUTOMATIC CVT TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETUNE-UPENGINE OVERHAULCYLINDER HEAD AND VALVESINSPECTIONREPAIR PROCEDURE OF VALVE SEAT
2017 Mitsubishi Mirage G4 ES, Automatic CVT Trans
Repair Procedure Of Valve Seat
2017 Mitsubishi Mirage G4 ES, Automatic CVT TransSECTION Repair Procedure Of Valve Seat
- Check clearance between valve guide and valve and replace the valve guide if necessary before repairing the valve seat.
- Repair the valve seat so that seat width and seat angle can become the specified shape.
- Smear a lapping compound on the valve and valve seat after the repair. Fit the valve into the valve seat.
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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.