2004 Chrysler 300M Q&A
2004 Chrysler 300M Question: What causes black smoke to come from exhaust.
The engine is running too rich (getting too much fuel). This is a sign of a pretty big issue that needs to be checked out by a shop that can diagnose this fuel injection control system. Here are some if you need one: http://repairpal.com/directory?address=11706&car_brand_names=Chrysler - Bret Bodas