mercury Workshop Repair Guides

Mercury Workshop Service and Repair Manuals

Camshaft, Lifters and Push Rods > < Brakes - Roughness During Application|Page 965
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Compression Check: Specifications

When checking compression pressures, variation between highest and lowest cylinders should be within 75 percent of one another. During testing,
engine should be at normal operating temperature, with spark plugs and air cleaner removed, throttle body valve blocked in wide open position.

Camshaft, Lifters and Push Rods > < Brakes - Roughness During Application|Page 965