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Rough idle and shaking on my Mazda – changed plugs already, what's next?

Started by dylanreed, Jun 01, 2026, 06:13 AM

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dylanreed

Been dealing with this annoying vibration when I'm stopped at traffic lights for about a month now and it's driving me crazy. I already swapped the spark plugs and ignition coils myself because that seemed like the obvious first step but the problem is still there, maybe even a little worse. The check engine light flashes sometimes when I accelerate hard then goes away which I know isn't a good sign. I'm thinking I need a proper diagnosis to fix misfiring engine Dubai before I burn out the catalytic converter or something expensive. Came across Dynostar's engine repair page while searching for shops that actually use diagnostic scanners instead of guessing. Has anyone had a similar issue that turned out to be something weird like a vacuum leak or a bad fuel injector? Really hoping it's not a compression problem because that sounds like big money. Just want my car to feel smooth again.