# UAZ-3962 and VAZ-21093 petrol engines — Seid-Transavto LLC

**IE A011**  
Seid-Transavto LLC · Russia · 2003

Compression increased in all cylinders of both engines, the weakest caught up, cylinders evened out. UAZ-3962 and VAZ-21093 petrol engines, Seid-Transavto LLC.

## Measured

- compression evened out across the cylinders — ****
- compression per cylinder, 4.9-5.4 → 8.1-8.2 on the UAZ and 8-10 → 12-12.5 on the VAZ — **25-65.3 %**

## Conclusion

Compression increased in all cylinders of both engines, the weakest caught up, cylinders evened out

Page: https://industry.xado.com/case/sei_d_transavto_series
PDF report: https://industry.xado.com/pdf/TIER%20A/SeydTransavto/DVS-UAZ-3962-VAZ-21093/IE-A011_XADO_SeydTransavto_DVS-UAZ-3962-VAZ-21093_EN.pdf