I would start by checking the fuel pressure. That would explain the long crank and the code for the misfire.
As far as the white smoke, you need to do a leak-down test to see if the head gasket is leaking.
I would also do a compression test to be sure there is no internal issue.
Report back with the results.
1. Disconnect the negative battery cable.
2. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure.
3. Drain the fuel tank. Refer to Fuel Tank Draining Procedure (Pick Up) or Fuel Tank Draining Procedure (2-Door Utility) or Fuel Tank Draining Procedure (4-Door Utility).
4. Remove the fuel tank.
5. Remove the fuel sender assembly.
6. Note the position of the fuel strainer (2) on the fuel sender
7. Support the fuel sender assembly with one hand and grasp the strainer (2) with the other hand.
8. Pull the strainer off the fuel sender. Discard the strainer after inspection.
9. Inspect the strainer. Replace a contaminated strainer and clean the fuel tank.
10. Disconnect the fuel pump electrical connector (5).
11. Remove the fuel level sensor electrical connector retaining clip (6).
12. Disconnect the fuel level sensor electrical connector (7) from under the fuel sender cover.
13. Remove the fuel level sensor retaining clip (4).
14. Squeeze the locking tangs and remove the fuel level sensor (3).
15. Remove the fuel pressure sensor (1).
Thursday, March 25th, 2021 AT 5:06 AM