Engine Compression Tester - 0-300psi

Give engine troubleshooting a useful starting point with a direct cylinder compression reading. This mechanical tester measures pressure up to 300 PSI and connects through 14 mm or 18 mm spark plug threads, helping you gather information before deciding on further repair work.

✅ Compare cylinder readings - Measure compression across compatible cylinders to identify differences worth investigating.

✅ Read pressure after the test - The air-hold valve retains the reading until you release it.

✅ Reach the connection more easily - An 11-inch hose separates the gauge from the spark plug opening.

✅ Move on to the next cylinder - The gauge reset button releases pressure between your individual measurements.

Make Compression Checks Part of Your Diagnosis

When an engine is running poorly, a compression check adds a physical measurement to the symptoms you can hear or feel. Record each cylinder's reading and compare the results with the engine manufacturer's test procedure and specifications.

The hose allows you to position the gauge away from the threaded connection while taking the measurement. Once you have noted the result, use the reset button to prepare for the next cylinder and keep your readings organised.

Technical details

• Range: 0-300 PSI / 0-21 bar
• Thread compatibility: 14 mm and 18 mm spark plug threads
• Hose length: approximately 11 inches
• Construction: metal and rubber
• Package: one compression tester

Add this compression tester to your diagnostic tools and start engine checks with measurable results.