Which of the following statements is LEAST-Likely true?
A)A leaner air-fuel mixture causes a higher resistance to spark, requiring more voltage to jump the plug gap.
B)A poorly performing cylinder with a high firing line can indicate a lean air-fuel mixture.
C)A poorly performing cylinder with a low firing line can indicate low compression.
D)You should run the engine at 800-1,000 rpm for oscilloscope tests.

Question

Quizplus · Accepted Answer

Running the engine at 800-1,000 rpm for oscilloscope tests may not be the best choice as it is not a standard or recommended procedure for most vehicles. The correct rpm range for oscilloscope tests varies depending on the make and model of the vehicle and should be determined by the manufacturer's specifications or a qualified mechanic.

Which of the Following Statements Is LEAST-Likely True