Will it hurt my Mercury Grand Marquis to drive with old spark plugs?

Replace spark plugs on time or about every 30,000 miles or so. Spark plugs are small but mighty. The spark of electricity that the plug emits across a small gap creates the ignition for the combustion needed to start your car. Without that spark, your car won't start.

What should I do if I see leaks under my Grand Marquis?

Puddles could indicate that your vehicle is leaking coolant, oil, or brake fluid. Ignoring these leaks can lead to permanent engine damage, so address these symptoms ASAP with a tune-up service.

Are hard starts and stops bad for my Mercury Grand Marquis engine?

Hard starts and stops put extra wear and tear on engine components. Smooth, gradual starts and stops, on the other hand, are a great way to help your engine run better. They can also help maximize your fuel economy.

Where can I get a tune-up for my Mercury Grand Marquis?

At your closest Firestone Complete Auto Care! Our experienced technicians offer Mercury Grand Marquis service, maintenance, and repairs.

How frequently do I need to get my Mercury Grand Marquis fuel injectors cleaned?

Factors like fuel type and driving conditions can affect how frequently you need to clean your Grand Marquis fuel injectors. Some manufacturers recommend a fuel system cleaning as part of routine maintenance, or as needed if your vehicle is showing signs of poor fuel system performance.

Who can I go to for Mercury Grand Marquis tune-ups?

Visit your local Firestone Complete Auto Care for your Mercury Grand Marquis tune-up. Make an appointment online and view our latest offers to save big.

Engine Tune-Up Service for Your 1986 Mercury Grand Marquis

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Schedule Your Mercury Grand Marquis Tune-Up Service Appointment

Tune in to tune up. Listen to your Grand Marquis and schedule an engine tune-up at the first strange squeak, clunk, or click. Make an appointment today.

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Tune Into Your Mercury Grand Marquis

Is it time for an engine tune-up? If you tend to ignore your car until something goes wrong, it could be time for a new way of doing things, especially if you want your 1986 Mercury Grand Marquis’s engine to last for a long time. Routine engine tune-ups can bring power back to your Grand Marquis. They're designed to help your engine start easier and run more efficiently, so you can enjoy improved fuel economy and lower emissions. When you follow the guidelines specified by Mercury for your vehicle’s tune-up schedule, you can rest assured you’re investing in your Grand Marquis’s long-term engine performance.

Routine Engine Tune-Up Service for Your Mercury Grand Marquis

Your nearest Firestone Complete Auto Care location has several options to choose from when it comes to Mercury Grand Marquis engine tune-up services. The first is the standard Firestone Tune-Up. This includes the installation of new spark plugs and a visual inspection of your engine’s components, plus a lifetime warranty on parts*. The second service focuses on your Grand Marquis's filters, specifically replacing the air filter and fuel filter. Our third service is a thorough cleaning of the fuel system. During this type of tune-up, we use a three-step process to get rid of harmful varnish, dirt, and carbon deposit buildup in your Grand Marquis’s fuel injectors, throttle body, and throttle plate. The result? Restored fuel system performance. Keep in mind that your Grand Marquis's mileage and maintenance history can uniquely impact its tune-up needs. A one-size-fits-all engine tune-up procedure doesn’t necessarily exist. Ask one of our technicians what your vehicle needs, based on your driving habits and your car’s current condition.

Where Should I Go for My Mercury Grand Marquis Tune-Up?

Come to Firestone Complete Auto Care for your next 1986 Grand Marquis engine tune-up. Consult your vehicle’s recommended service schedule from Mercury, or make a service appointment if you notice any of these symptoms from your engine: decreased gas mileage, "rough" idling or stalling when stopped, knocking noises in the engine, or a lit up check engine light on your dashboard.

*Ask a Firestone Complete Auto Care teammate about full terms and conditions for warranties.

1986 Mercury Grand Marquis Engine Tune-Up Q&A

Will it hurt my Mercury Grand Marquis to drive with old spark plugs? Replace spark plugs on time or about every 30,000 miles or so. Spark plugs are small but mighty. The spark of electricity that the plug emits across a small gap creates the ignition for the combustion needed to start your car. Without that spark, your car won't start.
What should I do if I see leaks under my Grand Marquis? Puddles could indicate that your vehicle is leaking coolant, oil, or brake fluid. Ignoring these leaks can lead to permanent engine damage, so address these symptoms ASAP with a tune-up service.
Are hard starts and stops bad for my Mercury Grand Marquis engine? Hard starts and stops put extra wear and tear on engine components. Smooth, gradual starts and stops, on the other hand, are a great way to help your engine run better. They can also help maximize your fuel economy.
Where can I get a tune-up for my Mercury Grand Marquis? At your closest Firestone Complete Auto Care! Our experienced technicians offer Mercury Grand Marquis service, maintenance, and repairs.
How frequently do I need to get my Mercury Grand Marquis fuel injectors cleaned? Factors like fuel type and driving conditions can affect how frequently you need to clean your Grand Marquis fuel injectors. Some manufacturers recommend a fuel system cleaning as part of routine maintenance, or as needed if your vehicle is showing signs of poor fuel system performance.
Who can I go to for Mercury Grand Marquis tune-ups? Visit your local Firestone Complete Auto Care for your Mercury Grand Marquis tune-up. Make an appointment online and view our latest offers to save big.

1986 Mercury Grand Marquis Maintenance

Take care of your vehicle and it'll take care of you. Click on a service below to learn more about properly maintaining your Mercury Grand Marquis.

Repair Service for Your 1986 Mercury Grand Marquis

Your car takes care of you, and we’ll take care of your car. When it’s time for a repair on your Mercury Grand Marquis, we’re here to help. Check out more info below about 1986 Mercury Grand Marquis repairs.