i just did an engine swap on the truck .. after reconect all the wires and harness back and also i did a new fuel injection pump install while the engine is still out side ... but now i try to start the engine , the engine is run but shake allot it feel like one or more of the syilinders are dead ... any i dear anyone ??

 

First you need to check for codes.
On newer trucks turn key on and off 3 times, codes should appear.

 

got it .. just found one more plug to the fuel line censor is not conected ...

 

All better ???

 

Run and drive very good ... This is my first time doing engine swap