Black Smoke From Exhaust: Causes, Diagnosis, and How to Fix a Rich-Running Engine
Black exhaust smoke means the engine is burning too much fuel. Here’s how to identify whether it’s the MAF sensor, oxygen sensor, or injectors — and what to fix first.
-
-
Black Smoke From the Exhaust: Causes, Diagnosis, and What to Fix First
Black exhaust smoke means your engine is running rich. Here’s how to read fuel trim data, find the real cause, and fix it without wasting money on guesswork.