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Continental Aircraft Engine FAQ

Engine Compression test - what are the limits

Copy of Continental Service Bulletin SB03-3 "Differential Pressure Test and Borescope Inspection Procedures for Cylinders

and just what is a "Differential Pressure Test"?
It used to be called a "compression test" which is an innacurate description. Then Continental in Service Bulletin M84-15 changed the name to "Cylinder Leakage Test (Compression)". Now it is a "Differential Pressure Test"

Cross section of the exhaust valve and seat in a Continental cylinder

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Disclaimer: sacskyranch website contains abundant information relating to aircraft maintenance. The information provided is not intended to supercede or supplement the F.A.A. approved maintenance and/or operator’s manuals. Those F.A.A. approved manuals must be utilized when performing maintenance and/or operating aircraft