Checklist di ispezione pre-acquisto per 2017 Porsche 911
Problemi noti — 2017 Porsche 911
Turbocharger wastegate rattle at cold start — common on 991.2 turbocharged engines
PDK valve body wear causing erratic shifts in older units
Coolant hose connections near turbochargers prone to seepage under heat cycling
Carbon buildup on intake valves from direct injection — requires walnut blasting
Oil separator failure leading to oil consumption into intake
Sport exhaust valve actuator failure causing stuck-open or stuck-closed flap
Cosa controllare
- Listen for turbo wastegate rattle on cold start
- Check for carbon buildup on intake valves — inspect service records for walnut blast
- Verify PDK behavior at all speeds including crawl traffic
- Inspect intercoolers and turbo coolant lines for seepage
- Test sport exhaust valve operation
- Confirm oil separator is functioning — check for oily intake
Costi di Manutenzione Previsti
| Intervento | Intervallo | Costo |
|---|---|---|
| Major service (spark plugs, filters, fluids) | every 30,000 miles | $900-$1,500 |
| Intake valve walnut blast cleaning | every 40,000-60,000 miles | $600-$1,000 |
| PDK transmission fluid | every 40,000 miles | $300-$500 |
| Brake fluid flush | every 2 years | $150-$250 |
| Tire replacement (rear 305/30-20) | every 15,000-25,000 miles | $1,200-$1,800 |
| Annual inspection | yearly | $400-$700 |
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