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St. Cloud Automotive and Diesel Repair

Monthly Archives: March 2021

What Can Cause Your Car to Smell Like Rotten Eggs?

What Can Cause Your Car to Smell Like Rotten Eggs?

Your car smells like sulfur, that awful rotten egg smell. This is a sure sign of serious mechanical problems. There is a tiny amount of sulfur in the form of hydrogen sulfide within the gas in your fuel tank. Normally, driving will convert it into sulfur dioxide. Result? No smell. So, what goes wrong when conversion doesn't happen? Incomplete combustion. Something is wrong with your emissions system. A brief scent of sulfur after revving up your engine is no problem. But a lingering smell is. Time to investigate. First, check your catalytic converter. Normally, it would convert hydrogen sulfide to sulfur dioxide. The converter may be jammed or broken. If so, replace it. If you don't, higher temperatures in your engine could lead to a car fire. If your converter is fine, your next step is to check the fuel pressure sensor. This sensor regulates your car's use of fuel. If it fails, it'll allow oil to clog up the catalytic converter which will prevent the converter from ... read more

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