I checked all four cylinders have spark. Pulled the plugs and got spark when grounded to the engine.Do this into the dead cylinders while running to confirm if it is a fuelling problem. Otherwise, it may be a spark issue.
Pulled the fuel rail and took out one injector so far. Need to get some stuff to hook up the spray cleaner and power supply to open and blow the cleaner through, not enough hands right now.
I am disappointed though because the injectors look clean to me, but this is the first injector I have seen so no bases for that judgement.
I did answer my question, the o-rings and seals seem un-prone to damage.... so far anyway.