# SDR OG5R2014110400650

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 4, 2014
- Submitted: November 4, 2014
- Operation: General aviation
- Filed by: [Und Aerospace, repair station OG5R092N](https://openairdocs.org/faa-repair-station/OG5R092N/und-aerospace.md) (OpenAirDocs)
- Aircraft: [N566ND](https://openairdocs.org/aircraft/N566ND), registered now
- Make and model: Cessna 172S
- Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Aircraft serial: 172S10804
- Aircraft time: 5,011 hours
- Engine: Lyc IO360L2A
- Engine time: 2,403 hours
- System (JASC): [7420 · Ignition Harness (Distribution)](https://openairdocs.org/jasc/7420)
- Part: Injector
- Part number: 25765362
- Part serial: 70DB1303
- Condition: Malfunctioned
- Location: Engine
- Part time: 3,493 hours
- Stage of operation: IN
- How discovered: O
- Nature of condition: E
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/OG5R2014110400650

## Discrepancy

ON RUN UP,  FOUND THAT THE THROTTLE CONTROL WOULD STICK AT LOW RPM.  WHEN ENOUGH FORCE WAS APPLIED TO MOVE PAST THE STICKING POINT THE RPM WOULD JUMP 200-400 RPM.  AFTER DISCONNECTING THE THROTTLE CONTROL WE FOUND THE CONTROL WAS SMOOTH. THIS MADE IT DIFFICULT TO GET A CONSISTENT IDLE RPM AND MIXTURE SET.

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