What happens if my Jaguar XJS 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 Jaguar’s recommendations.

What does a puddle underneath my Jaguar XJS mean?

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.

What do hard starts and stops do to my XJS 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.

I need a Jaguar XJS tune-up. Where can I get on?

At your nearby Firestone Complete Auto Care! Whether you need Jaguar XJS service, maintenance, or repairs, our technicians can get the job done.

How frequently do I need to get my Jaguar XJS fuel injectors cleaned?

Factors like fuel type and driving conditions can affect how frequently you need to clean your XJS 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 offers Jaguar XJS tune-ups?

When your XJS 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.

1994 Jaguar XJS Engine Tune-Ups & Maintenance

Get a Tune-Up

Schedule Your Jaguar XJS Tune-Up Service Appointment

Keep your XJS running newer, longer. Schedule an engine tune-up as soon as you notice your engine running differently. Make your appointment today.

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Enhance Jaguar XJS Performance with a Tune-Up

Is it time for an engine tune-up? If you usually wait until your car has an issue to take it in for service, it might be time to change your ways, especially if you want your 1994 Jaguar XJS’s engine to last for a long time. Routine engine tune-ups can bring power back to your XJS. Tune-ups help your engine start smoothly and run efficiently, which can lead to lower emission levels and better fuel economy. When you take your car for regular engine tune-ups as recommended by Jaguar, you’re taking vital steps toward keeping your XJS’s engine running smoother, longer.

Engine Tune-Up for Jaguar XJS

Your local Firestone Complete Auto Care offers a range of engine tune-up services for your 1994 Jaguar XJS. The standard Firestone Tune-Up is one service option. 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 XJS. Specifically, we replace the fuel filter and air 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 XJS. This can improve your fuel system’s performance (and therefore, your engine’s performance). Keep in mind that your XJS'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 Jaguar XJS

Schedule your next 1994 XJS engine tune-up service at Firestone Complete Auto Care. Not sure when you’re due for a tune-up? Use Jaguar’s recommended maintenance schedule as a reference point, or schedule an appointment ASAP if you notice any of these signs: stalling or shaky idling when you’re stopped, diminished fuel economy, 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.

Questions About 1994 Jaguar XJS Engine Tune-Ups

What happens if my Jaguar XJS 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 Jaguar’s recommendations.
What does a puddle underneath my Jaguar XJS mean? 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.
What do hard starts and stops do to my XJS 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.
I need a Jaguar XJS tune-up. Where can I get on? At your nearby Firestone Complete Auto Care! Whether you need Jaguar XJS service, maintenance, or repairs, our technicians can get the job done.
How frequently do I need to get my Jaguar XJS fuel injectors cleaned? Factors like fuel type and driving conditions can affect how frequently you need to clean your XJS 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 offers Jaguar XJS tune-ups? When your XJS 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.

Proactive Maintenance - 1994 Jaguar XJS

We know it’s not just a car, it’s your car. We’ll help you properly maintain your Jaguar XJS to keep it on the road and running smoothly. Learn more about maintenance below.

Repairs on Your 1994 Jaguar XJS

Nothing lasts forever. Even your Jaguar XJS's many parts and pieces. When something breaks, we're ready. Click on a repair below to learn more about 1994 Jaguar XJS repairs.