NORTHWEST AUTOMOTIVE LLC > Top Level Auto Repair & Maintenance Services > ENGINE MAINTENANCE

419-782-7827 | 1735 Spruce St Defiance, OH 43512

Engine Maintenance in Defiance, OH

Professional Engine Maintenance

Engine maintenance is vital to keep your car or truck operating at peak performance. It also impacts the longevity of your vehicle's engine. Trust the experts at Northwest Automotive LLC to help you protect your investment. Call us at 419-782-7827 or visit our shop in Defiance for expert engine maintenance.

Engine Maintenance Services

Below is a comprehensive list of the engine maintenance services we offer

Check Engine Light
No one likes to see their car's "Check Engine" light come on. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. At Northwest Automotive LLC, we can pull the code and diagnose the problem for you. Give us a call at 419-782-7827 or stop by the shop for our expert assistance.

Diesel
Although diesel engines don't require tune-ups and tend to last longer than gasoline engines, they do require regular maintenance. Typical maintenance tasks include:

Changing the oil & filter
Changing the air filter
Changing the fuel filter
Bleeding the fuel system
Draining the water separators
Refilling the urea injection system

You can count on the experts at Northwest Automotive LLC to help your diesel engine last a long time.

Fuel Injection
Fuel injection is a system for admitting fuel into an engine. Since 1990, fuel injectors have completely replaced carburetors as the primary means of getting gasoline into the engine. A fuel injector atomizes the fuel by forcibly pumping it through a small nozzle (under high pressure). Failure of the fuel injection system means poor performance and ultimately destroys the engine.

Ignition
Your vehicle's ignition system is responsible for starting the engine by delivering an electrical spark that ignites the air-fuel mixture in the combustion chamber. Issues can involve a worn ignition switch, a faulty ignition coil or broken or corroded wiring. These problems can lead to symptoms like the engine failing to start, intermittent stalling, dashboard warning lights, or even complete power loss while driving.

Ignition Wires & Cables
These vital parts transfer the spark from the ignition coil to spark plugs that ignite the mixture of fuel and air. The mixture starts the engine. Over time, ignition wires and cables get weak and break down. This makes it impossible for the spark to reach the engine cylinders. This results in the engine misfiring. Common symptoms of faulty ignition cables and wires are: poor gas mileage, engine misfires, engine light is on, and engine vibration.

Oil, Lube, and Filter
To keep running smoothly, your car highly relies on oil, lube, and oil filters. Oil helps in lubricating, cooling, and cleaning the internal engine components. With time, motor oil becomes contaminated. Your car needs an oil, lube, and filter change every three months (or 3,000 miles) in order to function optimally.

Spark Plugs
A spark plug delivers electric current to the combustion chamber from the ignition system. Spark plugs that haven't been changed for a long time can cause ignition problems. At Northwest Automotive LLC, we have automotive experts who will check and replace your spark plugs. For all your spark plug repair or replacement needs, call 419-782-7827 or visit Northwest Automotive LLC today.

Spark Plug Related FAQs

How do you know when a spark plug needs to be replaced?

The most common sign that a spark plug needs replacing is an engine that hesitates during acceleration. Other warning signs may include engine misfires during startup, rough idling, sluggish acceleration, declining fuel economy, and engine knocking.

What else should I replace when replacing spark plugs?

If you're considering having your vehicle's spark plugs replaced, there's a good chance the spark plug wires should be replaced as well. Ignition wires become brittle over time, and worn wires can lead to engine misfires, poor performance, and reduced fuel economy.

Check Engine Light FAQs

What could cause a check engine light to come on?

Come by Northwest Automotive LLC and we can diagnose the reasons for a check engine light turning on. It can range from something serious like a faulty catalytic converter or potential engine failure to something simple like a loose gas cap or the need for a routine 50,000- or 100,000-mile manufacturer maintenance service.

Is it okay to drive with the engine light on?

The short answer is no. The longer explanation is that the light may indicate a serious engine problem, and continuing to drive as if nothing is wrong could result in much more expensive repairs. A check engine light means you should have your vehicle inspected as soon as possible by a professional at Northwest Automotive LLC in Defiance.

What is the most common problem with my check engine light?

A loose gas cap is one of the most common reasons a check engine light comes on. However, the best way to determine the exact cause is to have a technician at Northwest Automotive LLC read the diagnostic code stored in your vehicle's onboard OBD computer.

What does a solid check engine light mean?

A steady check engine light generally indicates a non-emergency issue that still needs attention. Come by Northwest Automotive LLC and we'll help diagnose and resolve the problem before it becomes more serious.

What does an intermittent flashing check engine light mean?

A flashing check engine light is a warning of a potentially severe problem that requires immediate attention. Get your vehicle to an auto repair shop as quickly as possible, or safely park it and arrange for a tow to your preferred repair facility to avoid further engine damage.

To learn more about our Engine Maintenance services, call us at 419-782-7827 or request a quote by clicking below:

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Engine Maintenance, near Defiance, Ohio

03/03/2025

Took my car in after my rear seal blew out in the engine. Had water pump, thermostate, and new timing chain and related parts also replaced. I hace a 2016 Terrain with a 2.4L engine. My car after a week of having it back is running better than ever. Great job. I would recomend this shop for your auto repairs.
Robert Sigley

Discover More About Engine Repair Services At Northwest Automotive LLC in Defiance

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What Our Customers Are Saying

Engine Maintenance, near Defiance, Ohio

Took my car in after my rear seal blew out in the engine. Had water pump, thermostate, and new timing chain and related parts also replaced. I hace a 2016 Terrain with a 2.4L engine. My car after a week of having it back is running better than ever. Great job. I would recomend this shop for your auto repairs.

Robert Sigley, 03/03/2025

Tires, near Defiance, Ohio

Very happy with the service!!! They came and picked my truck up, repaired my tire, and brought my truck back to me within time frame they stated. Today my tire went low, they worked on my truck immediately. Would recommend them to anyone, they are very friendly and accommodating. 5 star rating from me!!!!

Barb Poper, 12/16/2021

Defiance, Ohio

Awesome shop!! Not only was the estimate the lowest I received, the entire exhaust system was replaced (headers on back), the work was completed in under 2 hours. I m a U.S.Army Veteran and my car had a misfire situation going on due to bad coil pack, well Tim & his guys found me a coil pack and put it on NO CHARGE!! I would recommend this shop to any & everyone!

James Brian Allen, 10/13/2021

Tim and the guys do great work here and are honest I definitely recommend these guys for any repairs

Matt B., 09/28/2021

Heating and Cooling Services, near Defiance, OH

I have a 2011 Jeep Liberty, the A/C stopped working, so I called up Tim and told him. He said can you bring it in today at 1:00pm? I said yes. So I took it in, they found that all the Freon was out of the unit. So they put more Freon in plus added some dye to find if the system may have a leak. So I paid the bill. Tim said, if you have any further problems bring it back. So the next day I started my Jeep up. The A/C stop working. So I called them back on Saturday. Can you bring it back on Monday at 2:00pm? I replied yes. Returned back to Northwest Automotive. They took my jeep in and recharged the A/C unit, and checked the system for any possible leaks. So Tim filled me in on no signs of dye so go ahead drive it and if any further problems bring it back. So how much money do I owe you? He replied nothing. The next day I drove my Jeep the A/C stop working again. So I called them back and told them. Can you drop it off so we can get to work on it Monday morning. I said yes. So I called them up Monday around noon and asked how are things going with my jeep? He replied that we believe we have found the leak. So he asked you said when it would set over night that the next day it not work? I replied yes. He asked if you don't need your Jeep back today, we will let it set overnight and check and see if it is still working in the morning. So I replied yes. I called them back the next day and asked how are things going with my jeep? Tim replied it is working fine. He asked if I would pick it up later today, l said that is fine because I will not be in town till around 3:30pm. Because I was at work. So went to pick up my Jeep. Tim said I believe the problem was from the low pressure valve. It should be alright. I replied so how much do I owe you. He said nothing, if you have any further problems bring it back. I believe he is a fair and honest person. I will respect that and I will bring him some more business. Thanks again.