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2003 Ford F-150 Repair Question


Topics covered: Spark, Compression, Compression test.
Mileage: 111,000 miles.

Asked on June 14, 2012

Cylinder 4 misfire p0304

2003 F150 XLT 5.4L V8 - recurring cyl 4 misfire after 8 new coils, 8 new spark plugs, 1 new fuel injector on #4, compression test passed - any ideas?
Avatar Asked by GRIZZ77

Answer

Replied on June 14, 2012

Check to make sure the injector is getting power and working. Check to make sure the wiring to the coil is good and you are getting spark. My guess is that one of those is missing.

Tiny Answered by Jacobandnickolas (expert)
57,474 answers provided