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Review on πŸš— ATP Professional Petrol Gas Engine Cylinder Compression Tester Gauge Kit Auto Tool: Ultimate Diagnostic Tool for Engine Performance Analysis by Paul Dahl

Revainrating 5 out of 5

Good price, helped diagnose an engine problem.

Works well on single-stroke engines. Compression was 0psi. Fill the cylinder with oil and the compression will stay at 0psi, indicating a possible valving problem. The exhaust valve found was leaking, so the old valves were cleaned and lapped. The compression increased from 0 psi to 142 psi using a straight shaft with gauge. This tool helped me avoid a full engine rebuild.

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