93 300zx misfiring

[nate29]

Ok got a problem with my 300zx i put a new timing belt on and the hole 9 yards with it.Timing marks set perfect.but now that its all done its missfiring started up fine any ideas of what this could be.

[daxnizmo]

Have you checked your connectors on the injectors? Or maybe the PTU? I had the same issue and found the connectors had a lot of corrosion. Cleaned the up with a pick set and electric motor cleaner, then put some dielectric grease on after.

[240sxxs]

wat PTU ...

[txq45]

Run codes .....?
Wiggle the wires on the PTU

[Two-One-Six]

It may be bad injectors...O-rings tend to go bad after awhile..Relatively easy fix. Z32's are notorious for having injector problems. I agree with daxnismo on the injector ends. I would check those first, and if any or some or bad it's not hard to install new connectors.