Nissan Xterra smoke or steam under hood with hot oil smell on Nissan Xterra

Some Nissan Xterra owners report experiencing smoke or steam under the hood accompanied by a hot oil smell, which may indicate several potential issues. These include severe oil leaks that can cause oil to drip onto hot engine components, leading to a burning smell and smoke. Additionally, excessive leaking from valve cover gaskets can result in oil burning on the exhaust, producing similar symptoms. Owners may also notice smoke from the belt area, suggesting problems with the belt itself, indicated by a burnt rubber smell. White smoke could signal a coolant leak, which may stem from issues like a loose hose clamp or a leaking head gasket. Furthermore, engine overheating is a serious concern that requires immediate attention to avoid further damage, and the location of the smoke can help pinpoint the problem. Lastly, some owners report idle smoke after driving, potentially linked to emissions issues, especially when no check engine lights are triggered. It is crucial for owners to address these issues promptly to ensure safe operation and prevent additional damage to the vehicle.