Top Causes of a Rough Engine Idle

Top Causes of a Rough Engine IdleDoes your car's engine seem to be changing speeds, without any pressure being applied to the gas pedal? Does it seem to be missing a beat or even shutting sounding as if it may sputter and die? A rough idle can be caused by a number of factors, many of which are easy to repair. Fixing idle issues is important, as doing so will ensure that you maintain proper control of your vehicle and it is able to continually give you great performance and maximum fuel efficiency. Let's look at some of the most common causes of a rough idle.

Clogged Fuel Filter

If the proper amount of fuel can't get to the combustion chamber, the vehicle will be unable to run smoothly. A clogged fuel filter is simple and easy to replace on most vehicles.

Dirty Fuel Injectors

Similar to the issue of a clogged fuel filter, a gummed up injector unit can prevent the proper amount of gasoline from getting to the combustion chamber.

Distributor Cap

The distributor cap are tasked with passing voltage from the ignition coils to the engine's cylinders through the spark plug wires and plugs themselves to ignite the air and fuel mix. A failing distributor cap will result in rough idle because the voltage is not being sent to the plugs at the proper time, or at all.

Spark Plugs

Additionally if there is trouble with the spark plug wires or the spark plugs themselves, the idle will be thrown off. It is not uncommon for spark plugs to be replaced, as the tip, where the spark occurs, is prone to corrosion after several years of use.

Bad Fuel Pump

A failing fuel pump will prevent the correct amount of gas from getting to the engine. As discussed, improper amounts of fuel will result in a poor idle.

Malfunctioning O2 Sensor

A dirty, corroded or otherwise malfunctioning oxygen sensor is going to take inaccurate readings of the exhaust fumes, leading to too much or too little fuel being sent to the combustion chamber.

A rough idle will cause a decrease in fuel efficiency and a drop in overall performance. If your car is suffering from this issue and you need auto repair in Mills, Wyoming, to correct it be sure to contact Chuck's Auto Repair Service. Our team offers expert auto repair for all makes and models. To schedule an appointment for superior auto repair in Mills give us a call at (307) 265-0209 today.

Chucks Auto Repair Blog

Written and Published By MORBiZ

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