Hello i have a 2003 ford expedition 4x4 that has lean leaks on bank 1 and bank 2 codes p0171 and p0174, what are the most common issues?

Asked by May 13, 2017 at 11:37 AM about the 2003 Ford Expedition XLT 4WD

Question type: Maintenance & Repair

its a 2003 Ford expedition 4x4 and 5.4L triton engine it also has a p0308 code   
its a cylinder missfire i believe.

2 Answers

845

Fix the misfire on 8 and retest, replace coil and plug on 8 and replace all other plugs

will do i'll tell you how it goes thank you.

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