Need some help with a 550 5ek that was just inframed. Started out with smoking/miss in cold Temps and idling. Cut out test brought us to #5. New injector didn’t fix it so tore it down and found head was cracked bleeding 5 into 6.
Now inframe is done. New parts:
– New head
– New cam
– New dampner
– New oil cooler
– Steedspeed exhaust manifold
– Borg 78/1.45 turbo
– Replaced 3 injectors, others are recent
– New injector harness in head
– All new fuel lines/tank pickups
Problem now is a smoking at idle and rough running. It ran perfect one time right after a timing calibration. No smoke smooth and peppy. Sat outside for a couple hours and started smoking after started again. Fuel pressure steady 70psi, clear fuel out the return.
Running 550 brakesaver as before, swapped ecms which didn’t help. No codes and all vitals are reading in range. Fuels like it’s running super rich. All trim codes are matched to injectors. Scratching our heads. Pin timed nice and ecm taking the timing cal real easy. Cut out test shows all is good. Going to try cam and fuel temp sensor but they are reading good. Not sure what else we can do.
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