A.點(diǎn)火時(shí)刻過早 B.點(diǎn)火時(shí)刻過遲 C.點(diǎn)火正時(shí) D.混合氣過濃
A.點(diǎn)火時(shí)間過遲 B.點(diǎn)火時(shí)間過早 C.高壓火弱 D.高壓無火