Everyone I ask says change the plugs but aren't the spark plugs suppose to last up to 100000 miles and no check engine light
Dec 1, 2011 at 7:05 AM
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KHLOW2008
✓Experienced Mechanic
41,812 POSTS
Plugs can last up to 1000000 miles but it does not mean they would not fail before then. Engine condition and usage can vary the lifespan of the spark plugs.
If the idling speed is too low, or engine mounts are bad, the engine would tend to shakes at idle, more noticeable when the AC is used and gears are engaged.