I agree that a fuel pressure test is one of the first things I test whenever I see a P0300 (random misfire). Also check for vacuum leaks. Is your idle rpm reasonable and not high?
For a 96, you should have 49 psi, plus or minus 5 psi at the fuel rail.
Good luck and let us know what you find!
Without data, all you have is an OPINION!
Past Jeeps: '49 ******, '81 Scrambler, '88 Comanche
Current Jeep: 1999 XJ Sport, bone stock, daily driver.
I work on Jeeps!!
Last edited by tjwalker; 02-22-2012 at 05:41 PM.