When a head gasket coolant leak causes a hydraulic lock in one cylinder, which of the following would be the more likely result?
A) fractured piston crown
B) fractured main bearing cap
C) connecting rod tensional failure
D) connecting rod compressional failure

Question

Quizplus · Accepted Answer

Connecting rod compressional failure is more likely because the hydraulic lock creates a situation where the incompressible coolant prevents the piston from moving properly. This puts excessive compressive force on the connecting rod, which can lead to its failure.

When a Head Gasket Coolant Leak Causes a Hydraulic Lock