Will it hurt my Nissan D21 to drive with old spark plugs?

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 Nissan’s recommendations.

What should I do if I see leaks under my D21?

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 Nissan D21 engine?

You can make your driving habits more engine-friendly. Hard starts and stops can increase the stress on engine parts, especially over many years. Boost your fuel economy and care for your engine by using gradual, smooth starts and stops instead.

1990 Nissan D21 Engine Tune-Ups & Maintenance

Get a Tune-Up

Tune Into Your Nissan D21

Is it tune-up time? 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 drive a 1990 Nissan D21. Regular engine tune-ups can optimize your D21’s power on the road. They're designed to help your engine start easier and run more efficiently, which can mean better fuel economy (a win for you) and lower emissions (a win for the environment). When you take your car for regular engine tune-ups as recommended by Nissan, you’re taking vital steps toward keeping your D21’s engine running smoother, longer.

Routine Engine Tune-Up Service for Your Nissan D21

Your local Firestone Complete Auto Care offers a range of engine tune-up services for your 1990 Nissan D21. 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*. A second service option replaces the air and fuel filter in your D21. 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 D21's fuel injectors, throttle body, and throttle plate. This can improve your fuel system’s performance (and therefore, your engine’s performance). Consider this when choosing a tune-up service for your D21: your vehicle’s maintenance record and mileage can determine which service is best. A one-size-fits-all engine tune-up procedure doesn’t necessarily exist. Talk to a technician about your driving style, mileage, and service history to learn more about your vehicle's specific needs.

Where Should I Go for My Nissan D21 Tune-Up?

Schedule your next 1990 D21 engine tune-up service at Firestone Complete Auto Care. Not sure when you’re due for a tune-up? Use Nissan’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.

1990 Nissan D21 Engine Tune-Up Q&A

Will it hurt my Nissan D21 to drive with old spark plugs? 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 Nissan’s recommendations.
What should I do if I see leaks under my D21? 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 Nissan D21 engine? You can make your driving habits more engine-friendly. Hard starts and stops can increase the stress on engine parts, especially over many years. Boost your fuel economy and care for your engine by using gradual, smooth starts and stops instead.

Maintenance for Your 1990 Nissan D21

Stay ahead of any potential issues with your Nissan D21 so your car can keep pace with life! Learn more about proper maintenance for your vehicle below.

Repairs on Your 1990 Nissan D21

Your car takes care of you, and we’ll take care of your car. When it’s time for a repair on your Nissan D21, we’re here to help. Check out more info below about 1990 Nissan D21 repairs.