Engine Lacks Power or Engine Exhaust Emits Black Smoke
WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
SYMPTOM TROUBLESHOOTING - ENGINE LACKS POWER OR ENGINE EXHAUST EMITS BLACK SMOKE
| Possible Causes | Remedies |
|---|---|
| Dirty air cleaner element | Inspect and replace air cleaner if necessary. |
| Loose compressor-to-intake manifold duct connections | Tighten duct connections as required. |
| Leakage at engine intake manifold | Locate the leak and repair as necessary. |
| Leakage at engine exhaust manifold | Locate the leak and repair as necessary. |
| Leakage at turbocharger mounting flange | Check condition of gasket at turbocharger mounting flange and tighten loose bolts. |
| Turbocharger rotating assembly binding or dragging | Refer to this symptom troubleshooting chart for "TURBOCHARGER ROTATING ASSEMBLY BINDING OR DRAGGING ". |
| Restricted duct between air cleaner and turbocharger compressor | Locate and remove restriction or replace damaged parts as necessary. |
| Restricted duct between compressor and engine intake manifold | Locate and remove restriction or replace damaged parts as necessary. |
| Restricted engine exhaust system (after turbocharger) | Locate and remove restriction or replace damaged parts as necessary. |
| Restricted engine intake or exhaust manifold | Locate and remove restriction or replace damaged parts as necessary. |
| Engine malfunction (fuel system component, valves, valve timing, rings, pistons, etc.) | Diagnose and correct as necessary. |