Your multimeter is a versatile tool. But for certain diagnostics, you need an oscilloscope to get a closer look at a vehicle’s electrical systems.

Which of the following statements about piston rings is incorrect?
A) End gaps must be evenly spaced around the piston
B) Rings are installed on the piston using a ring compressor
C) Rings must be installed facing the correct vertical direction
D) End gap must be measured before installing rings
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