Mercury Monterey Rough Idle

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

What are common reasons my Mercury Monterey has a rough idle?

While there are a variety of reasons your Mercury Monterey 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.
of the time it's
Vacuum Leak
of the time it's
Spark Plugs
of the time it's
Ignition Coil

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Mercury Monterey 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
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