# SDR 98ZZZX3203

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 16, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N172SJ](https://openairdocs.org/aircraft/N172SJ), registered now
- Make and model: Cessna 172R
- Registry model: [Cessna 172R](https://openairdocs.org/model/cessna-172r) (OpenAirDocs)
- Aircraft serial: 17280291
- Engine: Lyc IO360L2A
- System (JASC): [7322 · Fuel Control/Reciprocating Engines](https://openairdocs.org/jasc/7322)
- Part: Fuel Servo
- Part number: 25765361
- Condition: Malfunctioned
- Location: Engine
- Part time: 478 hours
- Stage of operation: IN
- Nature of condition: E, R
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZX3203

## Discrepancy

PILOT REPORTED ON ENGINE RUN-UP AT LOWER POWER SETTING, ENGINE RAN ROUGH AND WAS DIFFICULT TO KEEP RUNNING.  MAINTENANCE NOTICED ON GROUND RUN-UPS, ERRATIC FUEL FLOW INDICATIONS THAT CORRESPONDED WITH THE ENGINE ROUGHNESS.  A NEW UNIT WAS INSTALLED AND FLIGHT TESTED NORMAL.

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