State four drawbacks of carbureted SI engine
Drawbacks of carbureted SI engine:
1) No altitude compensation.
2) Mal-distribution of charge.
3) Variation in air: fuel ratio.
4) Inaccurate metering of charge.
5) Does not meet emission norms.
6) No temperature compensation.
7) No compensation of Exhaust gas recirculation.
8) Fuel atomization depends upon velocity of air in the venture.
9) Wear and tear of parts results in poor efficiency.
10) Backfiring may take place.
11) Carburetor Icing may take place.