So I took the truck for a test drive to check all systems. Steering good, no leaks, air is out ~ Brakes are good, no leaks ~ Coolant temps are on point, no leaks ~ Transmission shift kit is awesome, I LOVE the firmness it has now, no leaks ~ Electrical is good, voltage is good ~ Truck has misfire codes #3 and # 4.
Prior to the test drive I had a misfire only on #3. I tested spark and it was good and injector was firing. During the test drive, #4 and #3 showed a misfire. I stopped and checked connections at injectors and now just a misfire code on #4. Screwdriver and ear confirm #4 injector is not firing and pushing on connector did not result in a change. Tomorrow I will take off the TB and try to verify the circuit on it. My A/F ratio is sitting at 20.7 and burning clean, so I am going with I only have injector issues and not head related. I will still do a compression test on all cylinders to verify all the work that has been done. I had a pretest performed, HC's and CO are low to zero with 6.7% O2 left, so most definitely a fueling issue.