What Causes Oil in the Throttle Body?
1 Answers
Here is some relevant information about the throttle body: 1. Faulty PCV Valve: Many vehicles have a PCV valve connected to the valve cover, with one end linked to the valve cover and the other to the throttle body intake hose. If the PCV valve fails, it can cause oil to accumulate in the throttle body, which may also indirectly lead to minor engine oil consumption. 2. Turbocharger Oil Consumption: Many turbocharged vehicles experience oil consumption issues in the turbocharger. This is easy to diagnose—if oil is found in the intercooler pipes after disassembly, it indicates the turbocharger is consuming oil. 3. Engine Compression: Another possible cause is excessive blow-by due to engine compression, which can force oil through the breather tube, PCV valve, or one-way valve into the throttle body or intake pipe.