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On my 2003 Ford F150 4.6L I have a code P0306 replays coil spark plug and fuel injector compression is 125psi

Vehicle: 2003 Ford F150 4.6L

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P0306 Misfire number 6 cylinder

The compression has to be within 75 percent of the highest reading of a compression test. Having a compression test of 125 psi is how you got to this number, the other cylinder will have to be test to make a comparison if this is too low, a good compression should be 160psi
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P0306 FORD - Cylinder 6 Misfire Detected
Read more: https://www.autocodes.com/p0306_ford.html

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