Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

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pretty bad
Typical Repair Cost:
No data
Average Mileage:
78,000 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. not sure (1 reports)
2004 Nissan Altima engine problems

engine problem

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2004 Nissan Altima Owner Comments

problem #1

Feb 272009

Altima 2.5L

  • Automatic transmission
  • 78,000 miles


Found spark plug gap closed. Replaced plug and it did it again. Kept opening gap every time this happened and one day it stopped. That was 25000 mi. ago now it's doing it again. Mechanic says it's a piece of carbon on top the piston and who knows, he was not real sure but I've never heard of such a thing till I got on this website and found out I'm not alone. There must be a problem with the 2.5. I wish I'd never bought it. Even with top of the line extended warranty like I have forget Nissan owning up to a problem, they say it's normal maintenance, even thought it's major engine work to get to the top of the piston and see what's going on.Figure that one out!

- , St. Louis, MO, USA

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