You shouldn’t see a ton of exhaust flowing out of your Mercedes’ tailpipe, even if you drive a diesel. If there is excessive exhaust flow, there is something wrong with the engine. Peak Euro advises that serious fluid leaks can increase the amount of exhaust that flows out of the tailpipe. The fluid itself can also affect the color of the exhaust. Let’s talk more about this below.
If everything is operating as it should be, you won’t see your Mercedes’ exhaust. You might see the exhaust on a cold morning or evening, but the exhaust should be clear. This is a sign that the catalytic converter is treating the exhaust properly and the exhaust system is healthy. It’s also a sign that your engine does not have a fluid leak, although these signs are not full-proof. Your exhaust can remain clear and the engine may still develop a minor leak that does not affect the exhaust levels.
A fuel leak can produce a ton of black exhaust. Black exhaust can also be created by a rich fuel mixture in the Mercedes’ combustion chamber. Fuel can leak out of a loose fuel filter, cracked fuel injectors, or leaking fuel hoses. A rich fuel mixture can be caused by a clogged air filter, a malfunctioning MAF or O2 sensor, or problems with the engine control unit or catalytic converter. Driving with black exhaust flowing out of the tailpipe can be dangerous because you may start a fuel fire.
An oil leak can produce a ton of blue exhaust. Some people also describe the exhaust color as gray. Do not drive your Mercedes or other European automobile if it has blue/gray exhaust flowing out of the tailpipe. The oil leak will reduce the oil level in the engine and you will cause possibly irreparable damage to the engine if you drive the vehicle. It’s better to have your Mercedes towed to our shop so we can find the oil leak and fix it. The fix may be a partial engine rebuild.
Finally, a coolant leak can produce a ton of white exhaust. Don’t confuse white exhaust with the steam you see coming out of the tailpipe when it’s cold outside; this is normal. A ton of white exhaust is an indication that you have a serious breach in the cooling system or your head gasket is cracked. Your Mercedes will also overheat, and you may end up with steam coming out of the engine.
Peak Euro in Bend, OR, is here to help, so call us today to schedule an appointment for your Mercedes or other European automobile.