02 ford ranger 4.0 p0304 code
I haven't been getting responses so thought I would post here. I am getting my backside kicked and don't want to spend more money and time without some help.
I am getting a number 4 misfire code along with a noticeable miss espcially at throttle up from idle. To date I have done the following:
Replaced plugs, removed tested cleaned and swapped injector with another cylinder, swapped plug wires, replaced intake gaskets, cleaned carbon from intake ports, replaced coil pack, cleaned maf sensor, inspected for vacuum leaks by trying propane, wd40, checked for any jumping plug wires by spraying water and ammonia mixture, bought a code reader with scanning ability and confirmed o2 sensors are operating normally, cleaned egr valve, pulled my hair out, etc. The following is the freeze frame data and live data taken at idle.
Fuel Sys Closed
So then I decided to take some readings at idle:
ABSLT TPS 19.6
IGN Adv 15.5
OBDII STAT CA
Any help is appreciated.