Posted on 7/31/2026
Seeing thick black smoke coming from your exhaust is one of those moments that gets your attention immediately. At our shop, when a customer describes this, we know they are usually worried for good reason. Black smoke is not something most drivers would call normal, and in most cases, it is your vehicle’s way of saying the engine is burning too much fuel. That matters because your engine is supposed to run with a careful balance of air and fuel. When that balance gets thrown off and the engine starts running too rich, the exhaust can turn dark and smoky. The smoke may come and go at first, or it may be obvious enough to make you nervous every time you accelerate. Either way, it is a sign that something is not working the way it should. The good news is that black smoke usually points us toward a fairly specific type of problem. The less good news is that it can lead to poor fuel economy, rough performance, and more expensive damage if it keeps happening for too long. ... read more