Hey guys,Im new to this sight , ty for having it . I have been having trouble with my truck being hard to start ,at first, i would have to crank on it for about a min to start it. Then one morning , it took me about 10 mins of cranking , and it would randomly die, other than that was running great. I did a valve job, new rings and bearings about 500 miles ago. I had dtc 18, pump cam , i went through the wiring , i couldnt find any issues. So , i had a donor ip, known good. I replaced the pump cam sensor. The motor fired right up , but had a bad miss, I assumed air in the lines. I bled the system, still miss. Then it set the code 18 again and a new one , 54 t10 . It then ran fine, i restarted it codes went away but horrible miss came back. I have alldata diy, its not even showing a code 54 t-10, the t-10 was also posted with the code 54,I have a snapon code reader, never seen it have words after the codes . At this point,I have no codes but a horrible miss, when i replaced the sensor i used feeler gauges to set the new one in same position as old one. I have no idea whats going on now . Any and all suggestions would be greatly appreciated ,im in a bind , my back up truck blew the transmission so i need this back on the road asap. thx in advance , also i know there is a list of codes here , but im not sure where to look . Also this is a vin code f motor

 

DTC 18 - Pump Cam Reference Pulse Error
DTC 54 - PCM fuel circuit error

t-10 is not a valid code-no idea what it refers to?

Have you replaced the IP fuel return rubber hose with a clear hose yet?
Do so and monitor it for bubbles when idling safely parked-bubbles indicate air intrusion between the fuel level in the tank and the lift pump,they can cause a big problem with the optical sensor which is the cam reference.

PCM trouble is often a bad ground at the rear of the intake/passenger side-should be 3 grounds with 2 on a common ring terminal IIRC?