How to Solve High Fuel Consumption in Older Nissan Sylphy Models?

1 Answers
KaiDella
07/24/25 9:21pm
Older Nissan Sylphy models experiencing high fuel consumption can be addressed with the following solutions: 1. Excessive engine carbon buildup: Drive the vehicle to a 4S shop and have professional technicians clean the carbon deposits inside the engine. Alternatively, frequently driving on highways can help reduce carbon buildup, allowing the engine to maintain better power output and significantly lowering fuel consumption. 2. Faulty oxygen sensor: This may cause an imbalance in the engine's air-fuel mixture, leading to a sudden increase in fuel consumption. Simply replace the faulty oxygen sensor. 3. Clogged air filter in the vehicle: This can result in incomplete fuel combustion, increasing engine carbon deposits. Regularly clean or replace the air filter.
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