Will it hurt my Mercedes-Benz 420SEL 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 does a puddle underneath my Mercedes-Benz 420SEL mean?

Don't ignore puddles of fluid under your Mercedes-Benz 420SEL. It could signal a coolant leak, brake fluid leak, or an oil leak. Let any one of these leaks linger and it could cause engine damage.

What do hard starts and stops do to my 420SEL 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 Mercedes-Benz 420SEL?

At your local Firestone Complete Auto Care! Our technicians know how to service, maintain, and repair Mercedes-Benz 420SELs.

How often should I clean my Mercedes-Benz 420SEL fuel injectors?

Factors like fuel type and driving conditions can affect how frequently you need to clean your 420SEL 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 does Mercedes-Benz 420SEL tune-ups?

Visit your local Firestone Complete Auto Care for your Mercedes-Benz 420SEL tune-up. Make an appointment online and view our latest offers to save big.

Engine Tune-Up Service for Your 1988 Mercedes-Benz 420SEL

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Schedule an Appointment for Your Mercedes-Benz 420SEL Tune-Up

Tune in to tune up. Listen to your 420SEL 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 Mercedes-Benz 420SEL

Is it time for an engine tune-up? If you're the type of driver who waits for something to go wrong with your vehicle, it could be time for a new way of doing things, particularly if you want to keep your 1988 Mercedes-Benz 420SEL in tip-top shape. Regular engine tune-ups can optimize your 420SEL’s power on the road. 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 Mercedes-Benz for your vehicle’s tune-up schedule, you can rest assured you’re investing in your 420SEL’s long-term engine performance.

Routine Engine Tune-Up Service for Your Mercedes-Benz 420SEL

The Firestone Complete Auto Care location in your community offers several Mercedes-Benz 420SEL engine tune-up services. One option is the standard Firestone Tune-Up. It includes a complete visual inspection of engine components, installation of new spark plugs, and a lifetime warranty on parts*. The second service focuses on your 420SEL's filters, specifically replacing the air filter and fuel filter. Yet another service is a fuel system cleaning process, which involves removing varnish, dirt, and carbon deposits that have built up inside the fuel injectors, throttle body, and throttle plate in your 420SEL. This goes a long way in boosting your fuel system’s overall performance. Keep in mind that your 420SEL's mileage and maintenance history can uniquely impact its tune-up needs. This means that a tune-up service that’s a great fit for another car may not be optimal for yours. Ask one of our technicians what your vehicle needs, based on your driving habits and your car’s current condition.

Where to Get a Tune-Up for Your Mercedes-Benz 420SEL

If you’re looking for 1988 420SEL engine tune-up services, head to Firestone Complete Auto Care. Consult your vehicle’s recommended service schedule from Mercedes-Benz, 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.

*Check with a teammate at Firestone Complete Auto Care for complete terms and conditions regarding warranties.

Common Engine Tune-Up Q&A For 1988 Mercedes-Benz 420SELs

Will it hurt my Mercedes-Benz 420SEL 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 does a puddle underneath my Mercedes-Benz 420SEL mean? Don't ignore puddles of fluid under your Mercedes-Benz 420SEL. It could signal a coolant leak, brake fluid leak, or an oil leak. Let any one of these leaks linger and it could cause engine damage.
What do hard starts and stops do to my 420SEL 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 Mercedes-Benz 420SEL? At your local Firestone Complete Auto Care! Our technicians know how to service, maintain, and repair Mercedes-Benz 420SELs.
How often should I clean my Mercedes-Benz 420SEL fuel injectors? Factors like fuel type and driving conditions can affect how frequently you need to clean your 420SEL 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 does Mercedes-Benz 420SEL tune-ups? Visit your local Firestone Complete Auto Care for your Mercedes-Benz 420SEL tune-up. Make an appointment online and view our latest offers to save big.

Proactive Maintenance - 1988 Mercedes-Benz 420SEL

Take care of your vehicle and it'll take care of you. Click on a service below to learn more about properly maintaining your Mercedes-Benz 420SEL.

1988 Mercedes-Benz 420SEL Repair

Nothing lasts forever. Even your Mercedes-Benz 420SEL's many parts and pieces. When something breaks, we're ready. Click on a repair below to learn more about 1988 Mercedes-Benz 420SEL repairs.