Fusion FWD L4-2.5L Hybrid (2010)
Crank the engine as follows:
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Depress and hold the brake pedal.
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Fully depress and hold the accelerator pedal.
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Turn the key to the START position and crank the engine a minimum of 5 compression strokes and record the highest reading. Return the key
to the ON position.
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Release the accelerator pedal.
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Release the brake pedal.
7. Repeat the test on each cylinder, cranking the engine approximately the same number of compression strokes.
8. Position the key to the OFF position to deactivate the cranking diagnostic mode.
9. Clear all DTCs.
Compression Test - Test Results
The indicated compression pressures are considered within specification if the lowest reading cylinder is at least 75% of the highest reading. Refer to the
Compression Pressure Limit Chart.
Compression Pressure Limit Chart
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
