Thanks to a vehicle's exhaust system, dangerous compounds in gas and petroleum are kept away from the driver and passengers. It also helps reduce the release of pollutants into the environment. While a healthy exhaust system will emit white smoke, other colors could signal mechanical issues that require auto repairs. Here are several common shades to pay attention to and what they mean.

Understanding Vehicle Exhaust Colors

1. Gray or Blue

Damaged piston rings or faulty cylinder walls in your vehicle could cause oil to leak inside the engine. As the oil burns, it will often produce a gray or blue exhaust. If you notice this type of exhaust, have your vehicle inspected by an auto repair professional to identify and fix the leak. They will likely clean the engine, remove any excess oil, seal up the leak, and repair the valve seals to avoid future oil-related problems.

2. Black

Mechanical failures in your vehicle could cause it to burn too much fuel when it's in use. As a result, your car could produce a black exhaust, and you may need to fill up your gas tank more frequently. The excessive fuel consumption may be linked to issues inside the fuel injection system or a dirty air filter. Luckily, the problem is typically fixable if you use fuel additives to remove dirt and grime and install a clean air filter. An auto repair professional should also examine your vehicle's internal combustion system to ensure the right levels of air intake are in place to burn fuel properly.  

3. Thick White Streams

A thin trail of white smoke is typically considered normal exhaust. However, consistent and thick white plumes while driving may signal a more serious auto problem. In most cases, this problem is due to a cracked cylinder head or block or a damaged head gasket that allows coolant to leak into the engine. It's best to have the issue diagnosed to prevent the engine from overheating and causing serious damage and injuries. Auto maintenance professionals will also check the coolant reservoir for any leaks and make the necessary repairs to preserve your vehicle's exhaust system and combustion chamber.

Protect your vehicle's exhaust system with routine auto care at Continental Motors in Greensboro, NC. Having served the community since 1986, the ASE-certified shop has extensive experience working on domestic and imported cars, trucks, and SUVs. You can count on this team of skilled auto repair technicians for clear communication, upfront pricing, and same-day service. Call (336) 275-4791 to schedule an auto maintenance appointment. The full lineup of services is also available online.