Mixture Analysis by Exhaust Flame

Mixture Analysis by Exhaust Flame Problem Reasons :
Possible Causes :

1. Rich Mixture: Long deep blue flame with red tip, black smoke.
2. Lean Mixture: Short irregular light blue flame with yellow tip.
3. Proper Mixture: Quick blue flame without yellow tip.
4. Oil pumping is shown by blue exhaust smoke.


DTC engine OBD/2 fault codes list.

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