FAQs—Chevrolet Stylemaster Series
Black smoke is coming out of the tail pipe of my Chevrolet Stylemaster Series. The vehicle would emit this kind of smoke when I start the vehicle. However, even if the engine has warmed up, the smoke would still come out. I've also noticed that the engine would misfire. Any idea what this is all about? I need answers.
If there's black smoke coming out of the tail pipe, then you're most probably dealing with an emissions or an exhaust problem. It can also be a different issue. To confirm, you have to check various parts such as the fuel injectors. If you have leaking fuel injectors, replace them as soon as possible. You may also want to test the rest of the fuel system to see where the smoke originates. Another possibility here is a broken or clogged filter. Check the ignition system including the ignition module. If you're still clueless, finally ask a qualified auto technician to troubleshoot the problem, so you can get back on the road in no time.
I can smell some sulfur on my Chevy. Is this dangerous? Should I worry about it?
It's not really strange for the vehicle to have some sulfur odor. After all, gasoline contains some traces of sulfur in them. In some concentrations, you can naturally smell a bit of this element. It actually depends on various operating conditions and on the temperature. When the engine is cold for instance, the odor can become more noticeable. The odor may also linger after the vehicle decelerates or when it accelerates with a wide-open throttle. Removing any trace of the sulfur odor won't be easy since this is based on varying conditions. However, if the smell of sulfur is too strong, you have to contact the dealership to discuss it. You need to know if this is normal or not.
I can smell some rotten eggs on my vehicle, and I'm not happy about it. Where is this bad odor coming from? What should I do? Any clue?
The rotten egg smell comes from hydrogen sulfide, a compound formed through a small trace of sulfur in the fuel. Sulfur is typically converted into sulfur oxide, which is odorless. However, if the vehicle has a broken converter, the filtering layers become defective or ineffective. As such, sulfur isn't converted into sulfur oxide successfully. The result? A pungent rotten egg smell. This strong odor may linger due to a plugged converter. To eliminate the odor, the converter should be replaced.
Aside from the faulty converter, the rotten egg smell can also be blamed on a busted fuel pressure regulator. An engine that runs at a hotter temperature can also contribute to this problem. The nasty odor from the exhaust isn't harmless. This may be accompanied by some performance problems. So before the symptoms become worse or performance starts to suffer, you have to trace where the bad odor is coming from. Run some tests and do the necessary inspections to finally solve this problem.