Compression Test

An engine compression test measures the maximum pressure a cylinder can achieve during the compression stroke. To perform one, you must disable the fuel and ignition, then screw a compression gauge into each spark plug hole one at a time. Then you crank the engine over until the gauge needle stops rising and record the (PSI) reading for that cylinder before moving to the next. Consistent readings across all cylinders indicate a healthy engine

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Compression Test: How To Do It, Dry Or Wet – Review The Results

01/29/2025

Doing a compression test, is a good way to measure the condition of the rings, cylinders, and valves. So, if your engine is running rough or is lacking power, consider doing a compression test. Also, […]

Wet Compression Testing Is A Step Up, From A Regular Test

04/21/2024

AFTER YOU HAVE DONE A BASIC COMPRESSION TEST, THE NEXT STEP IS, WET COMPRESSION TESTING. Above all, an engine needs a good seal between the rings, and the cylinder walls. Also, between the valves, and […]

Engine Compression – What Can Cause, Low Or No Compression

11/16/2023

So, Engine Compression is the pressure created, inside each of the engine’s cylinders. And, low or no compression leads to, incomplete combustion and misfires. Symptoms of low engine compression can be, an illuminated (CEL), and […]