With a simple diesel engine compression test, it is possible to spot compression problems before they get worse. Here’s information on these tests and how to decide if it is time to perform one.

Also, engine compression readings can vary depending on altitude and other factors, so it is more important to compare the cylinders to each other rather than the assumed compression number.

A compression test reveals the condition of your engine's valves, its valve seats, and piston rings and whether these parts are wearing evenly.

Check out this engine compression test, leakdown, and bubble tests. Read more only at www.highperformancepontiac.com, the official website for High Performance Pontiac Magazine!

Inspecting a diesel engine for clues as to how much longer it will last requires the right techniques and tools.

Is your engine underperforming? Our expert shares how a diesel engine compression test could provide the diagnosis.