Close

Mazda Miata MX-5 Rough Idle

Learn if it's a simple fix or time to seek out a trusted technician.

What are common reasons my Mazda Miata MX-5 has a rough idle?

While there are a variety of reasons your Mazda Miata MX-5 has a rough idle, the most common 3 are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil.
34%
of the time it's
Vacuum Leak
21%
of the time it's
Spark Plugs
15%
of the time it's
Ignition Coil

Get your Mazda issue diagnosed by a professional

Find a high quality auto repair shop or dealer near you
x

Related Mazda Miata MX-5 Questions

See what others are asking about their Mazda Miata MX-5. Get answers from RepairPal's community of auto experts and enthusiasts.
30,000 miles rough idle at 750 rpm,once at idle,the rpm's start to drop causing a rough idel.tune up about 2,000 mi....
Engine emits black/grey smoke and runs rough will quit id idle is allowed to get below 1500 rpm

Related Mazda Miata MX-5 Problems

Find the most common driver-reported problems that are to blame when a Mazda Miata MX-5 has a rough idle.
The engine may idle roughly or stall when it's cold because the oil pump pressure relief plunger is sticking. failure...

Mazda Miata MX-5 Rough Idle Repair Symptoms

A failing ignition coil will create misfires in the engine, and lead to hesitation, extreme power loss, engine stalling, poor fuel mileage, and illumination of the check engine ...Read More
As we discussed, spark plugs are necessary for any gasoline engine to run. When they fail, the engine is in a constant state of attempting to ignite air and fuel, but cannot. Th...Read More