1. Schedule Your Appointment
Whether scheduling online or over the phone be sure and let us know what you're experiencing so we can provide fast and accurate service advice.
2. Diagnostics and Inspections
Drop off your vehicle and the shop will get to work with inspections and diagnostics using the same equipment as the manufacturers to determine issues and next steps.
3. Digital Vehicle Inspection Report and Estimate
Following the diagnosis we will text you a digital vehicle inspection report, containing pictures and videos of our findings and recommendations.
4. Review and Approval
A service advisor will reach out to walk you through the findings and recommendations to determine how you would like to proceed, or you can approve work directly in your DVI.
5. Work Performed or Scheduled
Most work can be completed immediately, or scheduled based on parts and customer availability.
Diesel Repair Backed by a Nationwide Warranty
Every diesel engine repair at Christian Brothers Automotive Alpharetta Milton is performed by ASE-certified technicians using manufacturer-quality parts. Before we begin any work, you receive a Digital Vehicle Inspection (DVI) with photos and detailed findings so you understand exactly what your vehicle needs and why. No surprises, and nothing done without your explicit approval.
Our diesel engine service is covered by our Nice difference.
® warranty: 3 years or 36,000 miles, honored at Christian Brothers Automotive locations nationwide. Whether you’re driving around Alpharetta or across the country, you have warranty coverage. Our complimentary shuttle service means your day doesn’t have to stop while your diesel is in our care.
Common Diesel Engine Problems We Solve
A diesel engine is a sophisticated system where every component, from the fuel injectors to the exhaust, plays a role in overall performance. A problem in one area can cascade quickly, and what starts as a minor issue can become a major breakdown if left unaddressed. Our technicians are skilled at pinpointing the source of any diesel problem and performing the necessary repairs with precision.
We provide comprehensive diesel engine service for a wide range of vehicles, including:
- Heavy-duty trucks
- Commercial and fleet vehicles
- RVs and buses
- Diesel-powered cars and SUVs
- And more
Neglected oil and fuel filters are among the most common causes of diesel engine trouble. A straightforward oil and filter change can often resolve performance issues and meaningfully extend engine life. We also handle more serious problems, including malfunctioning fuel injectors, worn turbochargers, and contaminated fuel systems. Hard starting, excessive exhaust smoke, decreased power, and unusual knocking are all signs your diesel needs an inspection.
Frequently Asked Questions
How Often Should I Service My Diesel?
Diesel vehicles generally need an oil change every 5,000 to 7,500 miles, though that varies by usage. Heavy towing may require more frequent visits. We’ll help you build a maintenance schedule that fits your driving habits and your vehicle’s requirements.
Why Is My Check Engine Light On?
In modern diesels, a check engine light often points to the emissions system, such as the EGR or DPF. Ignoring it can cause the vehicle to enter “limp mode,” which can restrict power to help protect the engine. Our diesel diagnostics identify the specific codes and determine the right course of action.
Is Black Smoke Normal for Diesels?
Older trucks were often known to smoke, but modern diesel-powered cars and SUVs should run clean. Black smoke typically indicates an air-to-fuel imbalance, such as a dirty air filter or a faulty injector. If you’re seeing it, a diesel repair appointment in Alpharetta can identify the source and help get your engine running clean again.
Do I Really Need to Drain the Water Separator?
Yes. Water in diesel fuel can damage high-pressure fuel pumps and injectors, which are among the more expensive components to replace. Draining the water separator regularly is a simple preventative step that helps protect your engine from fuel contamination damage.
What Is DEF, and Why Do I Need It?
Diesel Exhaust Fluid (DEF) reduces harmful nitrogen oxide emissions in modern diesel vehicles. If the DEF tank runs dry, the vehicle will typically enter limp mode or may stop running until it’s refilled. We check and top off DEF levels during routine diesel car service visits in Alpharetta.
Protect your engine investment. Book your diesel service online or call (678) 931-8672 to schedule with our Alpharetta diesel team.
Your Local Christian Brothers Amenities
FAQs
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Q. "Do you offer a warranty?"As part of our Nice difference.® commitment to providing our customers the best auto service experience possible, we also offer a 3-year/36,000-mile warranty on all the work that we do. We offer this warranty at every Christian Brothers Automotive nationwide, and it will be honored at any location, regardless of which branch did the initial work.
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Q. "What is a Digital Vehicle Inspection?"With a complimentary Digital Vehicle Inspection (DVI) on every visit, you’ll see firsthand photos of your vehicle from under the hood. We’ll let you know if everything is functioning properly or if there are any areas of concern. You can even approve or deny our service recommendations, all straight from your smartphone, or you can, of course, give us a call and we’ll explain our findings in further detail.
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Q. "Can you provide service under my extended warranty?"Yes. At Christian Brothers Automotive, we work with all major extended warranty providers to make needed repairs for our customers. If you have an extended warranty, you can discuss your carrier with our team when scheduling an appointment and confirm that the work will be covered. You can find a partial list of the extended warranty companies we work with here.
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Q. "My car is make x and model x. Can you help me?"Yes! Christian Brothers Automotive has been providing reliable car maintenance and repair for over 40 years. Over that time, our professionals and ASE-certified technicians have handled a vast range of makes and models, and they continue to navigate the forefront of the auto industry’s technologies. If you own a vehicle from a major American or foreign car maker, we are ready to service it.
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Q. "Do you offer loaner vehicles or a shuttle service?"We understand you have a full schedule. Whether you need to get to work, school, or need to attend to other responsibilities, we can take you where you need to go and even pick you up and bring you back.. Just select the shuttle service option when scheduling or let the service writer know when you call to make your appointment. For more information on our free shuttles, click here.
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Q. "Can I bring my own parts?"Yes, although we will not be able to offer our 3-year/36,000-mile warranty on these parts. Please reference this in your appointment details in the scheduler or when calling to make your appointment to ensure the shop is aware of your plans.
Have more Questions?
Our friendly auto service experts have the answers.
Call your local Christian Brothers Automotive car shop today
Hear What Our Customers Had to Say About Us
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"This is our new go to automotive repair shop. Ben has been very helpful and is very knowledgeable. Very friendly as well."
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