98 altima gxe missing.changed plugs &wires. Still misfireing. Like a plug is out. Idling and driving. Found broken vacum line fixed it. Stil missing. Any help

SOURCE: 98 f150 cylinder 4 misfire(4.6)-

it mit be out of time try advance your disbutor

SOURCE: Eratic idling and misfiring under pressure

confirm that the fuel pump delivers the proper pressure to the injectors

SOURCE: 2.7 l misfire after changing plugs

From karjunkie:

If the plugs get wet, then you have a spark problem somewhere in the ignition system. Pull a spark plug and hold it against a ground while you turn the engine over. You need to see a fat blue spark. If not, check the distributor, spark plug wires and coils. An easy way to test for spark is with an inexpensive spark tester. This is a device that is readily available at most auto supply stores. If the plugs do not fire properly, check the spark plug wires for fraying or cracking. Next, you need to check the coil(s). If firing voltage is low (weak spark), measure the coil primary and secondary resistance with an ohmmeter. If it is out of specifications, replace the coil. Also, make sure the coil is receiving normal voltage from the PCM or ignition module. If it is low, check the charging system for anything that may be reducing alternator output (battery and alternator cable connections, ground connections and voltage output).

SOURCE: Misfire on 4, 5 & 6

Take your time, if its been awhile do a complete tune-up. and preliminary check a misfire can come from a defective cap and rotor, fuel and air filter. a leak in the fuel system or defective regulator.

SOURCE: routh ilderling 94 NISSAN ALTIMA

check your fue nozzles