Why does the check engine light in my 6 turn on when I start my car?

It's okay if your check engine light comes on when you first start your vehicle. This is just your 6 testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Are Mazda 6 engine noises bad?

Unusual noises can signal a problem with your Mazda 6 engine. Tapping or knocking could mean you need an oil change. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage a Mazda engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Mazda 6 engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' flooring the gas pedal while the car is in Park, or accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Can I use water in my Mazda 6 radiator?

While it’s not recommended, you can use water in your 6 radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.

What can cause the engine in my 6 to suddenly stop?

Reasons your 6 car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.

Who repairs Mazda 6 engines?

For Mazda 6 engine repair, trust your local Firestone Complete Auto Care. You can make an appointment today at any of our thousands of locations across the U.S.

Reliable Repairs for 2004 Mazda 6 Engines

Learn about

2004 Mazda 6 Trim Options

Select your Mazda 6 trim level to learn more about Mazda-recommended engine repair. Use the following chart to find information.

L4/2.3L

V6/3.0L

2004 Mazda 6 Repair

Stuff wears out. Even your Mazda 6's many parts and pieces. We’re here to help when something stops working. Select a repair or category to learn more about 2004 Mazda 6 services.

We Care for Mazda 6 Engines

Mazda 6 drivers trust that their 6 will take them near and far. That might be why you bought it in the first place. However, the wear-proof engine has yet to be invented! Things can go sideways sometimes. When they do, you might find yourself searching for 2004 Mazda 6 engine repair or replacement parts. That’s where Firestone Complete Auto Care comes in. Since 1926, we’ve taken care of 500 million+ cars, so you can rest assured knowing your Mazda 6 engine will be in good hands. If you think something’s wrong with your engine, schedule an appointment at your convenience. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

My 2004 Mazda 6 Check Engine Light Is On

An illuminated check engine light on your Mazda 6 is one of the first signs it's time to 'brake' for engine service. A check engine light that’s on or flashing could be a symptom of a serious problem in your vehicle's ignition, Possible causes can include a failing oxygen sensor, damaged spark plug, a clogged catalytic converter, or a leak in the engine vacuum, to name a few potential sources. Bring your 6 to Firestone Complete Auto Care to get computerized diagnostics and we'll determine exactly why your check engine light is on. engine rattling, oil leaks, or misfiring.

2004 6 Engine Services

If your 2004 6 engine needs repairs, our technicians will make sure you understand what’s going on before they start working on your engine. We never do any work without your sign-off. If a repair isn’t urgent right now, we’ll let you know. But if immediate repairs are necessary for your safety, we’ll make sure that's clear, too. We want to give you all the details you need to make an informed decision about your engine repairs. Turn to Firestone Complete Auto Care for your 2004 6 engine repairs and you can feel good knowing that we only use Mazda-compliant replacement parts such as the serpentine belt, motor oil seal, fuses, or a different component.

2004 Mazda 6 Engine Q&A

Why does the check engine light in my 6 turn on when I start my car? It's okay if your check engine light comes on when you first start your vehicle. This is just your 6 testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Are Mazda 6 engine noises bad? Unusual noises can signal a problem with your Mazda 6 engine. Tapping or knocking could mean you need an oil change. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage a Mazda engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Mazda 6 engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' flooring the gas pedal while the car is in Park, or accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Can I use water in my Mazda 6 radiator? While it’s not recommended, you can use water in your 6 radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.
What can cause the engine in my 6 to suddenly stop? Reasons your 6 car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.
Who repairs Mazda 6 engines? For Mazda 6 engine repair, trust your local Firestone Complete Auto Care. You can make an appointment today at any of our thousands of locations across the U.S.