Solutions for High Fuel Consumption in Peugeot 307?
2 Answers
Reasons and solutions for high fuel consumption in Peugeot 307: 1. Engine carbon deposits: Excessive carbon buildup can lead to incomplete combustion of the air-fuel mixture, increasing fuel consumption. Regular cleaning of engine carbon deposits is necessary, including: intake tract, throttle body, fuel injectors, and cylinder deposits. The solution is timely carbon deposit removal. 2. Vehicle weight: Carrying excessively heavy loads can increase fuel consumption by about 2% compared to normal driving. Solution: Avoid carrying too much weight regularly to reduce vehicle load. 3. Clogged air filter: A clogged air filter restricts airflow, causing an overly rich air-fuel mixture or blocked exhaust pipes. Solution: Replace the air filter promptly. 4. Worn spark plugs: Worn spark plugs with excessive electrode gap reduce ignition efficiency, leading to incomplete combustion and increased fuel consumption. Solution: Replace spark plugs in time. 5. Low cylinder pressure: Practical experience shows that cylinder pressure below specified values can increase fuel consumption by 20%-25%. Solution: Conduct timely cylinder pressure checks.
I've been driving this Peugeot 307 for over three years, and it used to have high fuel consumption. I've figured out several solutions. First, check the tire pressure—if it's too low, fuel consumption will spike. I measure it monthly to maintain the standard value of around 2.3 kg. Also, replace the air filter if it's clogged; a dirty one affects air intake efficiency. I usually change it every six months—buying one online costs just a few dozen bucks, and I install it myself. Cleaning the fuel system is important too; older Peugeot 307s tend to accumulate carbon deposits. I often use additives and take it on the highway to rev the engine—simple and effective. If the spark plugs are old, replace them to ensure ignition efficiency, and don’t skimp on quality. Driving habits matter as well—I now start slower, avoid slamming the brakes, and use cruise control on highways, which immediately lowers fuel consumption. Finally, if there’s an engine issue like an oxygen sensor failure, take it to a professional shop for a computer diagnosis. These small tweaks save fuel and money, making the drive much more enjoyable.
