Must-Know Signs of Major Engine Trouble

Must-Know Signs of Major Engine Trouble

At the first indication of engine trouble, you'll want to have a mechanic take a look. By acting quickly, you can potentially address the problem before it worsens and requires very expensive repairs. It's helpful to be familiar with signs of engine trouble so that you know to get to the shop when they arise. Here are seven symptoms of serious engine trouble.

Loss of Power

With old vehicles that have a ton of miles, it shouldn't automatically raise a red flag if a bit of power has gradually been lost over time. However, if there's a sudden and steep loss of power, then there could be a serious engine problem, such as low compression due to worn-out pistons.

Knocking/Tapping Noise

If your oil level gets dangerously low, inadequate lubrication could lead to a repetitive knocking noise. This symptom sometimes means that you'll need a rebuild on the bottom end of your engine. However, you may be able to resolve this issue by just adding more oil.


Extremely low oil can cause metal-on-metal contact that results in vibrations that stem from your engine.

Burning Smell

If oil is burning up, insufficient lubrication could lead to the failure of moving engine parts.


Cooling system leaks are often to blame for overheating. A faulty water pump could also be the reason for an engine getting too hot. Because overheating can cause major engine trouble, it's important to always keep your cooling system in great condition.

Discolored/Excessive Exhaust Smoke

For clues about the underlying problem, you can look closely at the color of the exhaust smoke. White smoke is a sign of a coolant leak. Blue-tinted smoke suggests an oil leak. Black smoke is an indication that too much fuel is being burned up.

Check Engine Light Turns On

An illuminated check engine light doesn't necessarily mean that engine failure is imminent. But it's still best to bring your vehicle to the shop for computerized diagnostics so that you can address any concerns before they become more serious.

If you need auto repair, be sure to bring your vehicle to a reputable mechanic. For engine repair in Phoenix, AZ, contact the experts at Greg Clark Automotive Specialists at (602) 353-7431. Feel free to give Greg Clark Automotive Specialists a call today to schedule an appointment for any of your vehicle's repair or maintenance needs!

Greg Clark Auto Specialists Blog
Posted: January 18, 2021

Written and Published By MORBiZ

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