3.0 misfire on cyl 2&5. Had similar problem with 4.0. Stuck.

[GTRanger]

Hello everyone first time post and new member but here's my problem. I have a 1997 3.0L and the codes are p0174 too lean B2 p0171 too lean B1 and p0302 cyl #2 misfire and I had a similar problem with my own 4.0L 1998 ranger after it had kicked it's belt and overheated to hell thus warping the head and eating head gaskets. Now this particular 3.0L I've trouble shooted and it's had all ignition components from the coil to plugs replaced. I myself checked for vacuum leaks and found nothing. So now my thinking is to get a coolant CO2 tester. Anyone else had this problem or any ideas or thoughts?

 

[jewalker7842]

Clogged injector possibly? Try running some techron though it and see if that does anything. Just throwing an idea out there. As my grandpa always said rule out the simple things first becauase they are normally the cause of the problem.