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225 psi compression readings?
We have a 2011 Ford Expedition 5.4L that is setting misfire codes for cylinder #4 & 5. The misfire occurs @ WOT about 4500 RPM. The vehicle accelerates well but during sustained RPM / speed (50 mph +) the vehicle starts dropping the cylinders (#4 is the worst ... Login to read more. 
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| Engine | 5.4 L |
| Trans | 6-speed Automatic (Electronic) |
Vehicle Data
2011 Ford Expedition XL 5.4L
| Engine | 5.4 L |
| Trans | 6-speed Automatic (Electronic) |
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