IME reconditioning injectors is a waste of money, much better to buy some new ones. I have had reconditioned injectors not work correctly before and cause problems.
As Mudandsmoke mentioned make sure you have no air in fuel system and a good clean fuel filter, as well as checking fuel feed pipes, also check the fuel return pipe from the injector bank back to the tank and make sure it is not blocked or leaking.
As the guys have mentioned check timing first. Doing anything else is pointless if the timing is out.
When you know that timing is good and it hasnt cured the problem, cold start the engine and let it misfire for 30 seconds then kill engine before it warms up, then pull the injectors to see which one (or more) is wet with diesel.
Compression check any cylinders with wet injectors, if compression is good buy new injectors.
Good luck!
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