This car came in the shop for what appeared to be a simple lack of power poor performance issue. In an attempt to check fuel pressure on the low side the vehicle has never self started since. It now has a P1216 DTC. We can start up if the engine is doped but we have to maintain the fuel supply manually via a vacum hose. Scan data shows good start up inj pulse and cyl# injector pulse, high pressure reads in excess of 3.0 MPa. Why isn't this car self starting. Any info on this fuel system will be greatly appreciated.