| Leaks after air mass meter |
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| Possible causes of trouble: |
| 1 - | Hose connecting air mass meter to turbocharger |
| 2 - | Connecting hose to crankcase breather |
| 3 - | Connecting hose to mechanical turbocharger air recirculation valve |
| Inadequate charge pressure |
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| Possible causes of trouble: |
| 1 - | Connection hoses and pipe between turbocharger and charge air cooler |
| 2 - | Hose between charge air coolers and intake manifold |
| 4 - | Seal on charge pressure sender -G31- (in charge air cooler) |
| 5 - | Seal between throttle valve module and intake manifold |
| 6 - | Gasket between intake manifold and cylinder head |
| Inadequate charge pressure; possible smell of exhaust gas, traces of soot in engine compartment |
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| Possible causes of trouble: |
| 1 - | Connection between turbocharger and exhaust manifold |
| 2 - | Connection between exhaust manifold and cylinder head |
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