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Diesel & Truck Shop Services in Allentown, PA




Diesel engines are standard among semi-trucks, pick-up trucks, and fleet vehicles. As traditional gasoline prices continue to rise, using a diesel engine is becoming a more popular choice for family vehicles. At Custom Diesel Service, our diesel engine repair shop provides services for diesel engines of all sizes. The experts at Custom Diesel Service use the latest diagnostic tools to make sure your diesel engine is running as it should.


Diesel engines are reliable, but they do require regular maintenance to stay in top condition. Keeping your diesel engine’s oil and filters changed at scheduled, regular intervals is crucial. Since diesel engines do not have electrical ignition parts such as wires and plugs, there are fewer components within the vehicle that must be maintained. At the same time, it is wise to ensure that you regularly maintain the engine and work with a repair shop that understands the unique challenges of working with diesel engines.

Our Shop Services 


We understand that you need to get on your way as soon as possible. That is why our team makes every attempt to repair your heavy truck or trailer on the roadside. If we cannot make the repairs you need, we can refer you to someone who can tow your heavy truck and trailer to our full-service repair facility. Our repair shop offers extended hours because we know the importance of having the right part when you need it. 


We are a full-service repair facility specializing in diesel repairs and performance. Our team can also help you get parts for your Jeep, truck, or car at an affordable price to save you money over bigger commercial sites. 


Our team specializes in diesel performance and repairs on Cummins, Duramax, International, Detroit, and Caterpillar engines. We have a significant in-house inventory of parts and are typically able to get parts we do not have in stock the same or next day. The knowledgeable technicians and mechanics at our diesel repair shop are available for a variety of diesel engine services, including but not limited to the following:


  • Diesel engine repair

  • Hard starting diagnostics

  • Glow plug replacement

  • Diesel turbocharger repair

  • Diesel performance and repairs

  • Computer diagnostics

  • Drivability problems 

  • Tune-ups

  • Oil changes

  • Tires

  • Brake repair specialists

  • Mufflers and exhaust systems

  • Suspensions and steering

  • PA state inspections

  • Vehicle accessories



Our Fleet Services

We service fleets of all sizes as well as independent drivers, owners, and operators.

Fleet maintenance & repair services include the following:

  • Discounted labor rates 

  • Discounted part purchases

  • Pick-up and delivery of vehicles

  • Driver shuttle service


Experienced Diesel Technicians


Our shop specializes in diesel and truck repairs. When you rely on your diesel truck to have the torque and gearing to pull up mountains, you do not want just anyone maintaining your truck. You need an experienced diesel technician to work on your truck. At Custom Diesel Service, we have technicians you can trust with confidence. Our technicians have extensive experience in diesel engines. Additionally, our technicians provide our customers with timely maintenance and the accurate repairs they need on their diesel trucks.


We can provide customers with regularly scheduled maintenance or help with major diesel engine repairs. We understand the maintenance required to keep your Powerstroke, Cummins, and Duramax diesel trucks running safely and smoothly. Our technicians also know that the maintenance and inspection scheduled for diesel trucks are not the same as those of gas engines. Diesel engines need to be treated differently, particularly with diesel exhaust fluid and ultra-low sulfur diesel fuel.


Diesel truck owners need to regularly replace their fuel and air filters to ensure their trucks run smoothly and comply with all diesel regulations. Maintaining brakes on diesel engines and heavy trucks is especially important. The brakes on diesel trucks are heavy-duty and larger. Your brakes must work efficiently because your stopping power has to be more significant. We can help you conduct essential maintenance on your brakes, such as changing your brake pads regularly. We can also help you with diagnosing braking problems and fixing the issue promptly.



Fleet Repair & Maintenance Services


Every minute your trucks are not on the road, they are not on the job, and you may be losing profits. Keeping your fleet of trucks maintained and functional is essential for your business. At Custom Diesel Service, We provide our customers with fleet maintenance plans that make it easy for your truck drivers to receive routine maintenance services, like tire rotations and oil change. 


When you take part in our fleet maintenance plan, your vehicles will spend less time in the shop, and your drivers will spend more time on the road. Allowing us to care for your fleet will help your drivers get back on the road quickly, help you reduce the cost of maintaining your fleet of trucks, and give you and your drivers peace of mind.



Common Diesel Engine Problems


At Custom Diesel Service, we have extensive experience diagnosing and repairing issues that are common with diesel engines. Our professionals have diagnosed and fixed many diesel engines throughout the greater Allentown, Pennsylvania area. Our experience allows us to determine the issue quickly you are facing and fix it. Even though diesel engines are reliable, they do have common problems, such as:


  • Cooling system issues

  • Leaky gaskets

  • Overheating

  • Air and oil filtration issues

  • Fuel system restrictions

  • Dirty injectors

  • Piston scoring 

  • Faulty injection timers

  • Hard starting



How Can Our Team Service Your Diesel Engine Today?


At Custom Diesel Service, we are committed to providing our customers with the highest quality workmanship during their diesel engine service. As one of our customers, you can expect our professional staff members to answer your questions thoroughly and display the utmost levels of professionalism. 


Whether you undergo an emergency and need roadside assistance, or you would like to schedule an appointment at our repair shop, we are here to help. Call 1-800-800-4237, visit us during our hours of operation, or contact us by emailing to learn more about our diesel engine maintenance and repair services.

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