LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 2021 >> GT >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> Engine System - General Information >> Diagnosis And Testing >> Engine >> Component Tests >> Compression Test >> Compression Pressure Limit Chart
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Compression Pressure Limit Chart

GFD344378Courtesy of FORD MOTOR COMPANY

If one or more cylinders reads low, squirt approximately one tablespoon of engine oil meeting Ford specification on top of the pistons in the low-reading cylinders. Repeat the compression pressure check on these cylinders.

scientia non olet · About LEMON Manuals