Ash deposit on exhaust valve working faces can cause ____.
A、incorrectvalvetiming
B、incorrectvalvecooling
C、hightemperaturecorrosion
D、lowtemperature
发布时间:2025-09-29 05:26:03
A、incorrectvalvetiming
B、incorrectvalvecooling
C、hightemperaturecorrosion
D、lowtemperature