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← TechnologyWhich outcome occurs when faulty wastegate sticks closed within turbocharged diesel engine?
A)Engine knock from excessive cylinder pressures✓
B)Lean misfire from insufficient fuel delivery
C)Coolant boiling from restricted water flow
D)Oil consumption from increased blow-by
💡 Explanation
When a wastegate sticks closed, overboost occurs because exhaust gases are not diverted around the turbine, resulting in much higher than designed manifold pressures causing excessive cylinder pressure and engine knock. Therefore engine knock results, rather than misfire, boiling, or oil consumption each requires different specific failures.
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