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Chapter 28, Problem 7CQ

The ridge at the top of the cylinder __________.

  1. a. is caused by the rings that do not travel all the way to top of the cylinder
  2. b. represents a failure of the top piston ring to correctly seal against the cylinder wall
  3. c. should not be removed before removing pistons except when reboring the cylinders
  4. d. means that a crankshaft with an incorrect stroke was installed in the engine
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