Warning Signs of Serious Engine Trouble

At the first sign of engine trouble, you'll want to take steps to address the problem. By being proactive, you can minimize the risk of the issue worsening to the extent that you need very expensive repairs. Here are seven symptoms of a serious engine problem.

Knocking Sound

If your oil level gets extremely low, the lack of lubrication can lead to a knocking noise coming from your engine. Another significant problem that could cause a knocking sound is if the air-fuel mixture ignites on its own instead of via spark plugs.


A dangerously low oil level can lead to metal-on-metal contact that results in vibrations emerging from your engine.

Power Loss

With an old vehicle that has a ton of miles, it shouldn't be too concerning if a small amount of power has slowly been lost over the years. But if the power loss is sudden and steep, then you could be dealing with worn-out pistons or another serious issue.

Check Engine Light Comes On

When the check engine light turns on, it doesn't automatically mean that engine failure is about to occur. Still, it's wise to soon visit the shop for computerized diagnostics so that any emerging issues can be pinpointed and resolved before they get worse.


It's important to keep your cooling system in healthy condition so that overheating doesn't cause major problems, such as a cracked engine block.

Engine Stalls when Idling

This is a sign of a fuel delivery problem. A fuel delivery issue can actually pose a significant safety hazard if it leaves you stalled out in the middle of traffic.

Discolored/Excessive Exhaust Smoke

The exhaust smoke's color can provide clues about the underlying issue. Blue-tinted oil suggests an oil leak. White smoke is a symptom of internally leaking coolant. Black smoke is a sign that an excessive amount of fuel is burning up.

If you need engine diagnostics and repair, be sure to entrust the work to a reputable mechanic. For engine repair in Austin, TX, contact the experts at Precision Tune Auto Care at (512) 580-4826. Feel free to give Precision Tune Auto Care a call today to make an appointment for any of your vehicle's repair or maintenance needs!

Precision Tune Auto Care Blog
Posted: April 5, 2021

Written and Published By MORBiZ

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