this truck has a fresh rebuild trying to correct this issue, by a nother shop. 75 psi oil. knowen good fuel pump, new filters. changed cam and crank sensors with knowen good. no codes. actual fuel psi and dezired match 4350 psi. knowen good ecm. cranks like a champ, white smoke. driver stated will run over 1000 rpm but dies below. we have taken good parts off a running engine to swap. with no prevail. was dumb luck left the cam sensor unpluged and it started. when pluged in truck dies. has this happened to anyone before?

Daniel Ladner
Technician
Quality Car & Truck Repair, Inc
Big Rapids, Michigan, USA