6 Signs Of Engine Problems

Published on 11/22/2022

6 signs of engine problems

Driving from point A to B shouldn’t be a hassle. Unfortunately, you can experience unnecessary delays if your engine is underperforming. Learning the signs of engine problems will help avoid costly repairs and other roadside headaches.

If you need a mobile mechanic in the Bay Area, read this essential guide about maintaining your vehicle. Consider the information below, then schedule a repair with a reputable local crew. 

Why Should You Monitor Your Engine?

A typical combustion engine consists of hundreds of components that keep your vehicle running smoothly. Ignoring problems can result in costly repairs and may even risk your safety on the road. It is crucial to regularly monitor your engine’s performance to avoid mishaps.

Many people wait until problems occur before inspecting under the hood. However, most mechanics recommend checking your engine at least once a month. In some cases, you can identify issues with your engine simply by watching and listening for a few warning signs. 

6 Signs Of Engine Problems To Be Aware Of

You don’t need to be a professional mechanic to observe the early signs of engine problems. Here are some of the most common problems you could encounter:

The check engine light is on

How long have you been ignoring your check engine light on the dashboard? This warning light activates when faulty components trigger sensors in the vehicle. 

Sometimes, the light may turn on for minor issues, such as a loose gas cap or dirty air filter. However, an active check engine light could also signify bigger problems under the hood. Damaged catalytic converters, worn spark plugs, and dirty mass inflow sensors are some issues your vehicle may experience.

Because so many problems can cause a check engine light to activate, it’s best to let a professional mechanic assess your vehicle. They will identify the source of the trigger and recommend solutions if they find damage.

Power failure

If you own an older vehicle, it might lose power over time. However, a sudden loss could indicate a couple of problems. One concern is that your battery is preventing an adequate flow of energy to your engine and dashboard. 

Alternatively, power loss could be the result of piston damage.

Both of these issues can create dangerous situations on the road. Schedule an inspection at a trusted mechanic if you notice changes in your power. 


Keep an eye out for smoke or other vapors coming from the engine. This problem usually indicates an issue with the vehicle’s fluids.

Blue smoke occurs when oil leaks from the vehicle. Alternatively, white smoke suggests that your automobile is ejecting coolant. If you notice any of these issues, stop at the side of the road and turn off your engine immediately.

Black smoke indicates that fuel is burning too fast or you have a fire under the hood. If you notice flames coming from your vehicle, move to a safe distance and call 911. 

Leaking under your car

Leaking is a common occurrence that drivers will notice from time to time. Most vehicles leak condensation from the air conditioning system or exhaust. However, dark or oily patches under an idle car are cause for concern. Losing fluids from the gasket or oil pan can cause friction in the combustion chamber and damage the engine.

Never try to patch these problems yourself. Failing to do so correctly could cause more damage to your engine. A mechanic will be able to identify the source of the problem and repair the fluid lines safely.

Knocking sounds or unusual vibrations

You may be able to hear some common signs of engine problems. Suppose your vehicle is making unusual knocking sounds or vibrating violently while operating. This issue generally occurs when air-fuel mixtures ignite independently instead of from a spark plug.

Try to get your vehicle to a repair shop as soon as possible if you notice these problems. Knocking will wear down your engine quickly.

A stalling engine is one of the signs of engine problems

You may notice your engine stalling while the vehicle sits idle. Stalling may also occur when you accelerate to a certain RPM. Both situations indicate clogged fuel pumps or cylinder misfires.

Fuel delivery issues tend to affect older models. However, even new cars can experience stalling from manufacturing errors or mishandling. Remember, these problems can create hazards on busy roadways.

Ask your service technician what to do if you notice your engine stalling. They will help you understand how it occurs and what repairs you need.

How Much Does It Cost To Repair An Engine?

The price of your engine repair depends on the damage your vehicle sustains. Air filter replacements may only cost $10 to $80, while piston repairs could run as high as $5,000 at some shops. The best way to protect your engine from costly repairs is to send your car to a mechanic at the first signs of damage.

Investing in your vehicle will increase its service life and keep you safe from on-road disasters. Most mechanics recommend scheduling a yearly inspection even if you don’t notice any problems. Mechanics will update you on your vehicle’s condition and offer professional advice when needed.

Give Us A Call Today

Why risk spending thousands of dollars on future repairs when you could fix your problems today? At All Day Diesel, we help thousands of customers get the world-class vehicle maintenance they deserve. 

We aren’t your average mechanics. Our engine technicians take the time to assess your heavy vehicle with meticulous attention to detail. Once our crew identifies the problem, we communicate our discoveries transparently, so you know what to expect.

Our company prides itself on delivering fair pricing for parts and labor during every service. You can trust us to be honest and helpful when answering your questions. Continue exploring our blog posts to learn about the causes of turbocharger failure and more.

Schedule an inspection at All Bay Diesel today. Ask about the signs of engine problems by calling (925) 522-1780.

Call Now: (925) 522-1780