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2003 Ford F-150

Question: missing bad and no power

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123clark, 4.2L V6, Quinton, AL, January 28, 2012, 10:34

 Rookie

ck. codes that was ho2521-po303-p1131-p0171-po174-p0316 and cylinder 3 misfire. i have replaced oxgen sensors,plugs,wires,and coil. and it is missing.i ck. codes and now reads misfire on 4-5 and 6 have ck.wireing wireing ok no cross plug wires .it has no power at all and mising bad

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