| Effects of leaks in charge air system |
| A - Leaks after air mass meter -G70- |
| Possible causes of trouble: |
| 1 - | Connecting hose between air mass meter -G70- and turbocharger |
| 2 - | Connecting hose to crankcase breather |
| B - Leaks after turbocharger (intake side) |
| Possible causes of trouble: |
| 1 - | Air intake hoses and pipes between turbocharger and charge air cooler |
| 2 - | Air intake hoses and pipes between charge air cooler and intake manifold |
| 4 - | Seal below intake manifold pressure sender -G71- |
| 5 - | Seal between intake connecting pipe, mechanical exhaust gas recirculation valve and intake manifold |
| 6 - | Gasket between intake manifold and cylinder head |
| Effect: inadequate charge pressure |
| C - Leaks after turbocharger (exhaust side) |
| Possible causes of trouble: |
| 1 - | Components of exhaust gas recirculation system |
| 2 - | Connection between exhaust manifold and cylinder head |
| Effect: inadequate charge pressure; possible smell of exhaust gas, traces of soot in engine compartment |
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