have a 00 ford ranger with the 3.0 flex fuel. have both codes p0304 and p0305. have changed plugs, wires, coil, fuel filter, IAC, 2 fuel injectors on misfire cylinders, new MAF sensor. I'm stuck on what to do next. it idles rough and has a noticeable lack of power especially on the freeway. truck has 175,000 mi. I tried spraying carb cleaner around vaccum lines with nothing. please help any advice is really appreciated

 

With adjacent cylinders having a misfire, and with you replacing all the parts you did,

It's time to do a compression test, I'm thinking you have a bad head gasket.

 

shoot.... I sure hope it's not the head. anything else it could be??

 

Ditto compression check suggestion. 4 & 5 being adjacent, my call is the head gasket blew out between the cylinders.

 

anything else 8t could 've besides head gasket?

 

A cracked head.

 

damn... sure hope not. those are the only things it could be?? with a blown head gasket or cracked head would my truck overheat?