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Jaybird61, ASE Certified Master Technician
Category: Nissan
Satisfied Customers: 1414
Experience:  Automotive Instructor at Palm Beach State College
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2000 Nissan Xterra 3.3l engine idles ok but I have a miss

Customer Question

2000 Nissan Xterra 3.3l engine idles ok but I have a miss and poor acceleration . I have recently changed fuel pump, o2 sensor l, catalytic converters, spark plugs, and still have a rough acceleration. I also replaced the distributor appropriately 5years ago. What could be my problem
Submitted: 5 months ago.
Category: Nissan
Expert:  Jaybird61 replied 5 months ago.

Hi, My name is***** the engine idle real rough and misfire all the time?

Expert:  Jaybird61 replied 5 months ago.

If you are getting the misfire only when under acceleration then this is most likely caused by a spark plug wire is arching. When was the last set of spark plug wires replaced?

Customer: replied 5 months ago.
2 years ago
Customer: replied 5 months ago.
I will replace them today and see if it corrects my problem. Thanks
Expert:  Jaybird61 replied 5 months ago.

When did you replace the spark plugs? Make sure to check to make sure the plug wires do not have oil getting on them from leaking valve cover gaskets spark plug tube seals.

Customer: replied 5 months ago.
sir I will check. Thank
Customer: replied 5 months ago.
They didn't have any oil on them when I replaced the spark plug
Expert:  Jaybird61 replied 5 months ago.

Did you have the misfire before replacing the spark plugs?