i have an injected 2tgeu engine, which is running a bit rough, i have found that when you remove the no 2 cylinder lead or injector it runs the same meaning no ignition in the chamber. i knw its not the spark. apart from injector could it be anything else that could cause it? say head gasket or valves? someone said that it might be exhaust valve, but how is that so?
Run a compression test on all cylinders to get a picture of whats happening. Your looking for even compression. If you get 160, 160, 50, 155 you got valve trouble. Its possible that one or more valves arent holding the compression and not firing the cylinder properly.