What happens if my Mercedes-Benz 420SEL spark plugs fail?

Replace spark plugs on time or about every 30,000 miles or so. Without the spark of electricity created by spark plugs, your engine doesn’t have the combustion it needs to start — which could leave you stranded on the road. Always replace your spark plugs on time based on Mercedes-Benz’s recommendations.

What do I do if I see a pool of liquid under my Mercedes-Benz 420SEL?

Puddles could indicate an oil leak, coolant leak, or brake fluid leak– all of which can critically hurt your engine. Have your engine inspected as soon as you spot a pool of liquid in your usual parking spot.

Are hard starts and stops bad for my Mercedes-Benz 420SEL engine?

Hard stops and starts can lead to premature wear on your engine’s components. Lighten up that lead foot and opt for steady, fluid starts and stops instead. Your engine (and your passengers!) will thank you.

Where can I have a Mercedes-Benz 420SEL tune-up done?

At your nearby Firestone Complete Auto Care! Whether you need Mercedes-Benz 420SEL service, maintenance, or repairs, our technicians can get the job done.

How often do Mercedes-Benz 420SEL fuel injectors need to be cleaned?

The cleaning schedule for vehicle fuel injectors varies depending on your driving conditions and the type of fuel you use. Some manufacturers suggest cleaning your fuel system as part of routine maintenance, while others will recommend it on an as-needed basis if you’re experiencing poor performance. Reference your Mercedes-Benz owner’s manual for exact guidelines.

Who can I go to for Mercedes-Benz 420SEL tune-ups?

When your 420SEL needs a tune-up, head to your local Firestone Complete Auto Care. Check out our latest offers to save on your service and schedule an appointment online.

Engine Tune-Up Service for Your 1987 Mercedes-Benz 420SEL

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Schedule Your Mercedes-Benz 420SEL Tune-Up Service Appointment

If your 420SEL is acting strange or making new noises, it could be engine tune-up time. Don’t wait until small problems get bigger. Make an appointment now.

Schedule an Appointment

Enhance Mercedes-Benz 420SEL Performance with a Tune-Up

Is your engine overdue for a tune-up? If you tend to ignore your car until something goes wrong, it might be time to change your ways, especially if you want your 1987 Mercedes-Benz 420SEL’s engine to last for a long time. Routine engine tune-ups can bring power back to your 420SEL. Tune-ups help your engine start smoothly and run efficiently, which can lead to lower emission levels and better fuel economy. When you follow the guidelines specified by Mercedes-Benz for your vehicle’s tune-up schedule, you’re taking vital steps toward keeping your 420SEL’s engine running smoother, longer.

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

Your nearest Firestone Complete Auto Care location has several options to choose from when it comes to Mercedes-Benz 420SEL engine tune-up services. The first 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*. Another service option pays special attention to the filters in your 420SEL. Specifically, we replace the fuel filter and air filter. The third tune-up option is a fuel system cleaning service, which is a three-step process that removes varnish, dirt, and carbon deposits on your 420SEL's fuel injectors, throttle body, and throttle plate. The result? Restored fuel system performance. Here’s something to remember when choosing services: the mileage and service history of your 420SEL can determine what kind of service it needs. If you’re not sure what services are the best fit for your car, let us help! Talk to a technician about your driving style, mileage, and service history to learn more about your vehicle's specific needs.

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

Schedule your next 1987 420SEL engine tune-up service at Firestone Complete Auto Care. Follow Mercedes-Benz's recommended maintenance schedule or book an appointment as soon as you notice one of the following: shaking while the engine is idling, poor fuel economy, engine knocking, or an illuminated check engine light.

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

Questions About 1987 Mercedes-Benz 420SEL Engine Tune-Ups

What happens if my Mercedes-Benz 420SEL spark plugs fail? Replace spark plugs on time or about every 30,000 miles or so. Without the spark of electricity created by spark plugs, your engine doesn’t have the combustion it needs to start — which could leave you stranded on the road. Always replace your spark plugs on time based on Mercedes-Benz’s recommendations.
What do I do if I see a pool of liquid under my Mercedes-Benz 420SEL? Puddles could indicate an oil leak, coolant leak, or brake fluid leak– all of which can critically hurt your engine. Have your engine inspected as soon as you spot a pool of liquid in your usual parking spot.
Are hard starts and stops bad for my Mercedes-Benz 420SEL engine? Hard stops and starts can lead to premature wear on your engine’s components. Lighten up that lead foot and opt for steady, fluid starts and stops instead. Your engine (and your passengers!) will thank you.
Where can I have a Mercedes-Benz 420SEL tune-up done? At your nearby Firestone Complete Auto Care! Whether you need Mercedes-Benz 420SEL service, maintenance, or repairs, our technicians can get the job done.
How often do Mercedes-Benz 420SEL fuel injectors need to be cleaned? The cleaning schedule for vehicle fuel injectors varies depending on your driving conditions and the type of fuel you use. Some manufacturers suggest cleaning your fuel system as part of routine maintenance, while others will recommend it on an as-needed basis if you’re experiencing poor performance. Reference your Mercedes-Benz owner’s manual for exact guidelines.
Who can I go to for Mercedes-Benz 420SEL tune-ups? When your 420SEL needs a tune-up, head to your local Firestone Complete Auto Care. Check out our latest offers to save on your service and schedule an appointment online.

Maintenance for Your 1987 Mercedes-Benz 420SEL

Stay ahead of any potential issues with your Mercedes-Benz 420SEL so your car can keep pace with life! Learn more about proper maintenance for your vehicle below.

Repair Service for Your 1987 Mercedes-Benz 420SEL

Your car takes care of you, and we’ll take care of your car. When it’s time for a repair on your Mercedes-Benz 420SEL, we’re here to help. Check out more info below about 1987 Mercedes-Benz 420SEL repairs.