Why does my car have a rough idle?

Posted on 11/15/2018

A close up of a spark plug on a table | J&H Automotive

There are many reasons for a rough idle from a fuel issue to a misfire from older spark plugs. If your car is running rough it's always a good idea to have it checked out, before it causes an even bigger problem.


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By jhautoinc December 12, 2025
They help prevent excess engine wear.
By jhautoinc December 9, 2025
This is why your car isn't warming up properly.
By jhautoinc December 3, 2025
It's an important component.
By jhautoinc November 28, 2025
This requires some testing...
By jhautoinc November 26, 2025
A bit of maintenance can save you.
By jhautoinc November 21, 2025
This is why an oil change is so important
By jhautoinc November 18, 2025
It's not always the seal that's the issue.
By jhautoinc November 14, 2025
A brake inspection can prevent this.
By jhautoinc November 12, 2025
It's more important than you think.
By jhautoinc November 8, 2025
Is it age or an issue?