33.After the compression readings shown below were taken, a wet compression test was made. The second set of readings was almost the same as the first. Technician A says that a burned valve could cause these readings. Technician B says that a broken piston ring could cause these readings. Who is right？ 
(A) A only
(B) B only
(C) both A and B
(D) neither A nor B.

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統計： A(13), B(8), C(4), D(0), E(0) #810186

詳解 (共 2 筆)

#2722617

(A) A only 

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