Rough idling could be related to several issues affecting your engine's performance. The following are a few possible sources of your idling problem. This could help when you take your car to your auto care specialist.

The Problem Could Be Your Carburetor

The carburetor--without getting technical--regulates the flow of air and fuel into your engine's cylinders. A malfunction with this regulation could alter your vehicle's performance in all kinds of ways, including rough idling. The following are a few signs of a bad carburetor:

The fuel mixture could go wrong in two ways: it may use too much fuel and cause your engine to run rich. This means you will see black smoke from your exhaust pipe. Or, it could restrict the amount of fuel your car gets, which will cause your car to lose power. The bad fuel and air mixture will cause your car to hesitate when accelerating.

A faulty carburetor can also cause hard starts. Make sure you have your auto care specialist check out your car and confirm your suspicions.

Check Your Idle Air Control Valve

The idle air control valve controls the flow of air within your engine. Proper combustion needs a specific mixture between air and fuel. This is especially important when your engine is idling. The following are a few signs of a bad idle air control valve:

  • Unsteady idling because the air to fuel is off
  • The idle air control valve may be clogged causing low RPMs (which should always be around 1,000 RPMs)
  • The clog may be so bad that it may stall your car
  • Slow deceleration, which could be due to a clogged valve
  • Backfire from the tailpipe when you slow down because the valve might be creating a rich fuel mixture
  • Have your auto care specialist check your idle air control valve to see if this is the source of your problems.

Is It Your Fuel Injectors?

The fuel injectors are responsible for pushing the fuel your engine needs through your system. The fuel injectors can fail or they could be too dirty to work properly. Your idling will suffer if insufficient fuel is being pushed through.

The following are other symptoms that you might experience:

  • The performance of your engine may diminish without enough fuel being injected through. You will notice this during acceleration.
  • There could be a misfire due to improper fuel mixture.
  • The off-kilter mixture of fuel may consume too much of your fuel.
  • Your car may take more time to start. The crank will be noticeably longer than usual because your car isn't getting the fuel it needs.
  • The car may fail to start completely due to clogged injectors.

As you can see, bad idling could be connected to several other issues, and it is best to deal with it as soon as possible. For assistance, talk to a professional like First Klass Transmission.