Buick Roadmaster Rough Idle

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

What are common reasons my Buick Roadmaster has a rough idle?

While there are a variety of reasons your Buick Roadmaster 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

Get your Buick issue diagnosed by a professional

Find a high quality auto repair shop or dealer near you

Related Buick Roadmaster Questions

See what others are asking about their Buick Roadmaster. Get answers from RepairPal's community of auto experts and enthusiasts.
I have a 1996 buick roadmaster 350 lt1 5.7, i am having some issues with the vehicle idling rough and seems to be mis...
At, speed runs well, just during idle, oilpressure drops, engine idles rough and stalls.

Buick Roadmaster Rough Idle Repair Symptoms

A failing ignition coil can create several symptoms: Check engine light comes on Engine runs poorly or stall Increased emissions Reduced fuel economy Car won’t start I...Read More
When spark plugs fail, the engine will struggle. The check engine light will come on, and it may appear either solid or flashing. The driver would likely notice one or more of t...Read More