Nissan Repair: 2001 nissan altima with a missfire in the #4 cylinder, nissan altima, leaky injector

Question
hey von saw your answer to an earlier similar question but have further question, i have replaced plugs wires and the injector and still have a miss in the #4 i have plenty of spark and have power through the wiring to the injector with still no luck help if you can thanks

Answer
Ben,

Check the plug by switching it from another hole.  Next, check the compression.  You might have bad rings causing it not to spark properly.  Also, you could have a defective injector.  Check the fuel pressure and make sure after the key is off the fuel pressure does not leak off rapidly.  If it does that means you have a leaky injector.