1999 Ford F-250 Super Duty not working?

I have a 1999 250 Ford F Super Duty with a V10 engine. A few months ago, I realized that there was a small crack in one of my bosses. I removed the head, took a welder and welding had. I put it back into the truck and when I arrived that day he seemed working well. He acted like he was cold and hot. Things got worse until I took to advance to connect to a computer. The team says I have a fuel bank cut two condition (PO174), catalyst efficiency low bank 1 (PO420), the number of cylinder misfire detected cylinder 1 (PO301) number of cylinders misfire cylinder 6 (PO306) and the number of misfire cylinder 7. (Lost the paper with the code.) I think it will be one or a few have coil packs gone wrong, there's a crack in the head and take a breath and try to correct the fuel-air mixture flow or mass air sensor. PLEASE, any help would be !!!!!!!! GRAN

O2 sensor labor law can not, if you can get fresh air evacuated. And yes, it is likely that the bad coils.

Airco SCAMP C/Miller Big D40-G Engine Driven welder with Continental F-163 engine

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