10 Problems that Decrease MPGs

10 Problems that Decrease MPGsWe all want to get the most out of our gas tanks as we can regarding efficiency, but to do so we need to stay on top of the troubles vehicles encounter. There are some issue that can cause larger decreases in fuel efficiency then other, such as the following. If you ever notice a drop in miles per gallon be sure to visit your local auto repair shop for proper diagnostics.

Worn Spark Plugs

Spark plugs are fed an electrical charge which allows a spark to jump between a tiny gap between metal prongs. If the plugs become corroded or misgapped they can misfire, which results in inefficient burning of gasoline.

Under Inflated Tires

Proper tire pressure is necessary for proper control as well as maximum fuel efficiency. Under inflated tires means the engine has to work harder to make them turn, resulting in a decrease in MPGs by 25 percent or more.

Low Oil

If your vehicle is low on oil or has is not up to date with oil changes the moving parts of the motor will not be sufficiently lubricated. The lack of clean oil results in an overworked engine that not only suffers from excessive wear and tear but decreased fuel efficiency.

Clogged Air Filter

A dirty air filter can cause the car's computer to send more gasoline to the combustion chamber since not enough oxygen can be supplied for a proper air and fuel mixture.

Dirty Fuel Filter

You may think you'd save gas if not enough gas is getting to the combustion chamber, but that simply isn't the case. A motor struggling for gas will run extremely inefficiently resulting in a drop in miles per gallon.

Leaky Fuel Injection Unit

If the fuel injectors are leaking your vehicle will be fed extra gasoline. This of course causes your car to run rich.

Exhaust Leak

An exhaust leak will prevent the car's computer from being able to determine the proper air and fuel mixture.

Failed O2 Sensor

The oxygen (O2) sensor is located in the exhaust and measures the amount of oxygen in the emissions to help calculate the proper air and fuel mixture. If the sensor fails or otherwise malfunctions it can result in extra gas being delivered to the motor, thus decreasing fuel economy.

Malfunctioning MAF Sensor

Similarly, the Mass Air Flow (MAF) sensor calculates how much of the incoming air needs to be mixed with the fuel to allow for the highest efficiency. If the sensor fails the excess fuel may be sent to the combustion chamber.

There are many issues that can cause a drip in fuel efficiency, so pay attention to how much time and money you're spending at the pump. If you notice a jump in fuel spending be sure to visit Chuck's Auto Repair Service for quality auto repair in Casper. Our team of auto repair experts will quickly identify and repair the problem and have you on your way in no time. Give us a call today at (307) 265-0209 to schedule superior auto repair in Mills or Casper today.

Chucks Auto Repair Blog

Written and Published By MORBiZ

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