Check for excessively oily areas that indicate a leak.
Checked Components
Condition and correct installation of air ducts (the presence of foreign objects, contamination, broken connections, pinching, fractures, holes, cuts, tightening screws, etc.).
Availability, condition and installation of sealing parts.
Presence and tightening of fastening clamps.
Correct installation of the boost pressure sensor. Make the necessary repairs.
Checking the air filter (tested components)
The absence of foreign objects in the air intake and outlet pipes of the air filter housing.
Condition and correct installation of the air filter housing (broken connections, breakage, punched walls, etc.).
Cleanliness, conformity and absence of deformation of the filter element.
Mass Air Flow Sensor - Check «Mass air flow sensor-.
Make the necessary repairs.
If the engine is equipped with an air intake damper (diesel stop), check:
- intake damper (engine stop valve) (AC067 «Air damper», stage B);
- state of the air intake damper;
- tightening of fastening bolts;
- the presence of cracks in the air intake damper;
- that the swirl damper is in its rest position (AC013 «Air swirl damper», stage B).
Make the necessary repairs. Replace filter if necessary.
Check the exhaust manifold for leaks, especially where it connects to the turbocharger. Check the exhaust path by performing an exhaust system test. Make the necessary repairs.
Check the condition of the air-to-air cooler for contamination.
Check its tightness (checked on a stationary car at a stable frequency of rotation of the crankshaft 3500-4000 min-1).
Replace if necessary.