Gas Mileage Not What it Used to Be?

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As gas prices rise and your paying more at the pump you may be starting to wonder why doesn’t a tank of gas last as long as it used to? Well there are a few reasons that your normally fuel efficient vehicle is starting to lag behind the promised miles per gallon.

What’s the Weather Winter brings around a 20% increase in consumption because of the extra load on the engine during cold weather and the rich fuel mixture that is needed for cold starting. In the summer over use of the air conditioning can cause extra work for your engine causing an increase in fuel usage. Bottom line if you can bear the heat or cold without using the heater or AC you should see a rise in fuel efficiency.

Oxygen sensors Oxygen sensors adjust your air-fuel ratio constantly as you drive and also keep your catalytic converter running optimally, so if there is a malfunction your vehicle can start using more fuel or running rich as a result.

Tire Pressure Having the incorrect tire pressure is one of the easiest explanations for loosing miles per gallon. You should check your tires frequently to make sure that the pressure matches the factory recommendations for your vehicle. Remember that extreme cold or heat can cause your tires to expand and shrink causing loss of tire pressure so even if your tires are new it’s worth checking!

Spark Plugs Spark plugs deliver electric current from the ignition system to the combustion chamber so if one is malfunctioning your vehicle will start to run poorly and as a result you will get poor gas mileage.

Fuel Injectors or Filter Clogged injectors or filter can cause fuel leaks or cause your engine to run rich. These problems can sometimes be fixed with a fuel flush to remove the build up in your injection system. This is also why it is so important to put high octane gas in your vehicle, lower octane gas contains more of the contaminates that cause build-up in your fuel system.

Mass Air flow Sensor This sensor detects the amount of air coming into the fuel system. The computer then delivers the proper amount of fuel into the vehicle. A dirty or malfunctioning sensor can decrease fuel efficiency and lead to rough idle and stalling.

Oil type The type of oil that you use can effect your mileage because increased friction causes increased strain on your engine. Consider switching to full synthetic or a synthetic blend to aid in engine lubrication.

These are just a few fixes that can help you fill up less often and maximize the fuel efficiency of your vehicle. If you feel like you want to get the most per gallon come on in and let us check over your fuel system and do a fuel flush you will be amazed at the extra miles!

Call us at 707-725-6321 or You can also book an appointment online by clicking HERE

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