Incident Summary
A pilot reported that during preflight inspection, low engine compression and low oil level were observed. After adding oil to reach the proper level, the pilot departed. During the initial climb, at approximately 100 feet above ground level, the engine began popping and losing revolutions per minute (RPM).
Forced Landing
To avoid obstacles, the pilot executed a left turn and subsequently landed the aircraft in a small grape vineyard. The landing was necessitated by the loss of engine power.
Post-Crash Examination
A post-crash examination of the engine revealed low compression and excessive oil consumption. These conditions were attributed to wear. Additionally, it was determined that the aircraft had been operating with automotive fuel rather than aviation fuel.
Additional Context
The source does not specify the aircraft type, registration, operator, location, date, time of day, weather conditions, or whether ATC was involved. No injuries or damage are mentioned in the source.