Low cylinder compression pressure and a high exhaust temperature may indicate （）<br>A:early fuel injection timing<br>B:leaking valves<br>C:a continuously open scavenge air port<br>D:low cooling water temperature

Low cylinder compression pressure and a high exhaust temperature may indicate （）
A:early fuel injection timing
B:leaking valves
C:a continuously open scavenge air port
D:low cooling water temperature

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