Ignoring the signs of engine trouble can lead to more expensive repairs or even complete engine failure. Recognizing the warning signs early can help you address problems before they become severe. At Prestige Automotive, we provide expert engine repair in the greater Helena, MT area. Here are five warning signs that it’s time for engine repair.

Check Engine Light Is On

One of the most obvious signs that something is wrong with your engine is when the check engine light illuminates on your dashboard. While this warning light can indicate a range of issues, from minor malfunctions to serious engine trouble, it should never be ignored. A diagnostic scan can reveal the specific issue, allowing the mechanic to determine the necessary repairs before more extensive damage occurs.

Unusual Noises Coming from the Engine

Strange noises coming from under the hood can indicate serious engine trouble. Knocking or pinging sounds are a serious red flag and may suggest worn-out bearings. Squealing noises could be a sign of a failing belt, while grinding sounds might indicate issues with the water pump or another component. Any persistent or loud noise coming from the engine is a warning sign that requires professional diagnosis. 

Discolored/Excessive Smoke from the Exhaust

Your vehicle's exhaust can provide valuable clues about engine health. If you notice excessive smoke—especially if it’s black, white, or blue—there’s likely an underlying problem. Black smoke often indicates a fuel mixture issue, while blue smoke suggests oil is burning. White smoke can mean coolant is leaking into the combustion chamber, which is a sign of a failing head gasket. Unusual smoke should never be ignored.

Loss of Power and Poor Performance

If your vehicle struggles to accelerate or lacks power, you should alert the mechanic. A drop in performance can be caused by fuel delivery issues, a failing ignition system, or problems with internal engine components. A decrease in fuel-efficiency is another red flag that something isn’t functioning properly. If you notice a significant change in how your car runs, it’s best to have a professional inspect the engine before the problem worsens.

Rough Idling or Stalling

An engine that shakes or stalls while idling is not running efficiently. Rough idling can be caused by dirty fuel injectors or faulty spark plugs. If your vehicle stalls unexpectedly, it could be a significant issue, such as a failing fuel pump. Consistent rough idling or stalling is a clear sign that your engine needs attention.

Engine Repair in Helena, MT

When you need auto repair in Helena, MT and the surrounding area, contact Prestige Automotive at  (406) 442-2724. At our nearby auto shop, we can expertly handle your vehicle’s repair and maintenance needs. Feel free to give us a call to make an appointment!