Q: Changed oil in Mercedes clk350 now the vehicle has this burned smell and it is smoking slightly. What could be the issue?

asked by on June 15, 2017

Changed oil in Mercedes clk350 now the vehicle has this burned smell and it is smoking slightly. My friend says it's because there is old oil mixing with new oil. There is also an air vent hose that is cracked under my hood. I was thinking that could be an issue as well. What could be the issue be?

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