Solutions for High Fuel Consumption in Peugeot 307?

2 Answers
Paislee
07/23/25 11:41pm
Reasons and solutions for high fuel consumption in Peugeot 307: Engine carbon deposits: Excessive carbon deposits can lead to incomplete combustion of the air-fuel mixture, increasing fuel consumption. Therefore, regular cleaning of engine carbon deposits is necessary, including: Intake manifold, throttle body, fuel injectors, and cylinder carbon deposits. The solution is to clean the carbon deposits promptly. Vehicle weight: Carrying excessive weight in the vehicle can increase fuel consumption by about 2% compared to normal driving. The solution is to reduce the vehicle's weight when carrying too many items. Clogged air filter: A clogged air filter restricts airflow, causing an overly rich air-fuel mixture or a blocked exhaust pipe. The solution is to replace the air filter in time. Worn spark plugs: Worn spark plugs with excessive electrode gap can lead to insufficient ignition, incomplete combustion of the air-fuel mixture, and increased fuel consumption. The solution is to replace the spark plugs promptly. Low cylinder pressure: Practice has shown that cylinder pressure below the specified value can increase fuel consumption by 20% to 25%. The solution is to check the cylinder pressure in time.
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DelMaximus
08/10/25 7:33pm
When encountering high fuel consumption issues with my Peugeot 307, the first thing I consider is mechanical factors. It could be due to an aging or failing oxygen sensor, leading to incomplete combustion and wasted fuel. Worn-out spark plugs with reduced ignition efficiency can also increase consumption; it's recommended to inspect or replace them every two years. A clogged air filter affects air intake, and cleaning or replacing it can significantly improve the situation. Insufficient tire pressure increases rolling resistance, so checking and topping up air during refueling is advisable. Simple maintenance on these parts isn't expensive, and replacing spark plugs and filters yourself isn't difficult. Long-term neglect may lead to increased engine carbon buildup, worsening fuel consumption. Regularly using high-quality engine oil ensures smooth lubrication and reduces friction losses. Investing in an OBD scanner to read fault codes is a good idea; any abnormalities should be addressed promptly by professionals. Normal fuel consumption leads to more relaxed driving, and the savings on fuel add up over time, making car maintenance easier. Drive gently, avoiding hard acceleration and sudden braking.
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