7 Must-Know Signs of Engine Trouble

7 Must-Know Signs of Engine Trouble

It's important to take action as soon as you notice a sign of engine trouble. This way, you can hopefully nip the problem in the bud, saving yourself from much more costly repairs. Here are seven symptoms of engine trouble.

Check Engine Light Comes On

When the check engine light illuminates, it doesn't automatically mean that your engine is on the cusp of failure. Nonetheless, you'll still want to soon get to the shop for computerized diagnostics so that any emerging issues can be pinpointed and remedied before they get worse.

Knocking Sound

When oil gets dangerously low, insufficient lubrication can result in a knocking noise coming from the engine. Another reason that a knocking noise could emerge is that the air-fuel mixture is igniting on its own instead of via spark plugs, which is an issue that should be promptly addressed.


If your oil drops to an extremely low level, then you may notice vibrations that stem from metal-on-metal contact.

Power Loss

It's not necessarily cause for concern if your older vehicle has incrementally lost some power as the years have gone by. But if your engine suddenly loses a significant amount of power, then you could be dealing with a serious issue like worn-out pistons.


It's crucial that your cooling system stays in great shape. Otherwise, overheating could occur, which could lead to major engine problems, including a cracked block.

Engine Stalls when Idling

There's a good chance this means you have a fuel delivery problem. This type of issue needs to be quickly addressed because stalling out in the middle of traffic can seriously jeopardize your safety.

Discolored/Excessive Exhaust Smoke

You can look to the exhaust smoke's color to get clues about the underlying issue. Black smoke is a sign that an excessive quantity of fuel is burning up. Blue-tinged smoke suggests that oil is leaking. White smoke is a symptom of an internal coolant leak.

If you need engine repair, be sure to visit a reputable mechanic. For engine repair in Sandy Springs, Brookhaven, Vinings, and North Atlanta, GA, contact the experts at McCullough Napa Auto Care at (404) 252-3014. Feel free to give McCullough Napa Auto Care a call today to make an appointment for any of your vehicle's repair or maintenance needs!

McCullough Napa Auto Care Blog
Posted: April 10, 2021

Written and Published By MORBiZ