A Compression Test is an essential diagnostic procedure used to evaluate the internal condition and performance of gasoline-powered marine engines. This test measures the pressure generated in each cylinder during compression, providing valuable insight into the health of the engine’s pistons, valves, and rings.
By performing a compression test, the Marine Surveyor can identify issues such as wear, leakage, or imbalance between cylinders, problems that may not be apparent during routine operation or even a sea trial. This test is especially valuable during Pre-Purchase Surveys, Mechanical Inspections, or Condition Evaluations to help determine an engine’s true operational state and remaining lifespan.
