Vehicle manufacturers make much of the fact that their products come equipped with extended-life spark plugs that can maintain a precise gap for 100,000 miles. However, before you wait that long to replace them, you should bear in mind that spark plugs that hit the 80,000-mile marker are four-fifths worn.
Also question is, how often do I change spark plugs?
30,000 miles
One may also ask, how long should spark plugs last? Most spark plugs have a factory service interval of 100,000 miles, though some may be as much as 120,000 miles. Long-life platinum and iridium spark plugs will typically last up to 100,000 miles or longer provided the engine isn’t using oil or doesn’t spend a lot of time idling.
In this manner, what are the symptoms of bad spark plugs?
Symptoms of bad spark plugs can include:
- Reduced gas mileage.
- Lack of acceleration.
- Hard starts.
- Engine misfires.
- Rough idling.
How often should spark plugs be replaced Honda?
every 7 years