Cummins Diesel Repair Specialists in Bremen, OH
At Unlimited Diesel Performance, we fuel your passion for diesel performance. Since 2004, we’ve been dedicated to earning the trust and loyalty of our clients through expertise, exceptional customer service, and a shared love for all things diesel.
Our slogan, “Fueling the Addiction,” reflects our dedication to helping Cummins owners achieve peak performance and reliability. We share your passion for diesel engines, and we’re here to ensure your truck performs at its absolute best.
Dedicated to Your Cummins Diesel Performance
At Unlimited Diesel Performance, we fuel your passion for diesel performance by delivering expert care for your Cummins engine. Our mission is to earn your trust and loyalty through unmatched expertise, dedication to customer satisfaction, and a shared enthusiasm for all things diesel. Every service we provide—from diagnostics to major repairs—is designed to ensure the right decision is made the first time, every time. With a focus on delivering positive results, we’re here to help you get the most from your Cummins engine.
Cummins Diesel Engines We Service
We proudly service Cummins diesel engines from 1989 and newer, delivering expert care for every model.
5.9L 12-Valve Cummins (1989-1998)
Known for its mechanical simplicity and legendary durability, the 12-valve Cummins is a favorite for heavy-duty applications and performance modifications. Its unmatched reliability makes it ideal for those who demand consistent power.
5.9L 24-Valve Cummins (1998-2002)
The 24-valve Cummins introduced electronic controls for enhanced efficiency and power while maintaining the durability of its predecessor. It’s a perfect choice for drivers seeking performance and dependability. Fuel injection pump failures due to lift pump issues are common in these models. A malfunctioning lift pump can continue to let the truck run, but it places extra strain on the VP44 injection pump, leading to internal damage and eventual failure if not addressed promptly.
5.9L 24-Valve Cummins (2003-2007)
The 2003-2007 5.9L Cummins featured a Bosch common rail fuel system, improving power, efficiency, and reliability. Known for its tunability, it remains a favorite among diesel enthusiasts. Common issues include injector failure, fuel rail pressure sensor problems, and lift pump failures, requiring expert diagnostics and repairs.
6.7L 24-Valve Cummins (2007.5-Present)
The 6.7L Cummins combines modern engineering with unparalleled power and torque. Its Variable Geometry Turbocharger (VGT) and advanced emissions systems make it ideal for towing, hauling, and daily driving.
Precision Fuel Injector Services for Cummins Engines
Fuel injectors are at the heart of your Cummins engine’s performance, ensuring efficient fuel delivery and consistent power. At Unlimited Diesel Performance, we replace Cummins injectors with genuine Bosch, Dynomite Diesel Performance or S&S Diesel replacements, depending on the desired power level you are trying to achieve.
Our fuel injectors aren’t just trusted locally—they’re relied on by customers across the U.S., Canada, Australia, and Europe. Wherever you are, you can count on us for exceptional injector services.
Comprehensive Injector Diagnostics and Repairs
Our in-house diagnostic tools and expert technicians pinpoint injector-related issues quickly and accurately, addressing common problems such as:
- Clogged or Dirty Injectors: Reducing fuel flow and causing rough idling or power loss.
- Injector Failures from Lift Pump Issues: A frequent concern in 5.9L Cummins engines.
- System Contamination from CP4 Pump Failures: Commonly seen in 2019-2020 6.7L Cummins models.
Cummins Diesel Services We Provide
At Unlimited Diesel Performance, we offer a full range of Cummins services to keep your truck running smoothly. Here are some of the services we offer:
Engine Diagnostics
Using advanced diagnostic tools like the Snap-On Zeus scanner and its 4-channel oscilloscope, we provide precise and efficient diagnostics for all Cummins engines, ensuring accurate troubleshooting of electrical, fuel, and emissions systems.
Emissions Diagnostics and Repair
Whether you need DPF cleaning, EGR cooler replacements, or turbo diagnostics, our emissions repair services are designed to maintain performance and compliance.
Steering and Suspension
Ball joints and tie rod ends are critical to your truck’s stability. Our team ensures your front-end components are in excellent condition, providing a safe and smooth ride.
Electrical Repairs
We diagnose and repair electrical issues in your Cummins truck, including battery replacements, lighting systems, and reprogramming to keep your systems functioning flawlessly.
Brake Repairs
Our brake services ensure your Cummins truck’s stopping power is reliable, offering rotor replacements, system inspections, and repairs for safe performance under any load.
Preventative and Factory-Recommended Maintenance
Protect your investment with regular maintenance, including:
- Full synthetic oil changes
- Fuel, air, and cabin filter replacements
- Fluid services (coolant, transmission, brake, and power steering)
Cummins Engine Rebuilds
When your Cummins engine needs more than repairs, our precision engine rebuild services restore it to peak performance, using top-quality components and expert craftsmanship for long-lasting reliability.
Custom Machine Shop Services
Our in-house machine shop helps us provide precision repairs for Cummins engines, including cylinder head machining, engine rebuilds, and more.
Common Cummins Issues We Solve
With years of experience, we’ve resolved a wide range of Cummins engine issues, including:
5.9L 12-Valve and 24-Valve Cummins
- Fuel injection pump issues caused by lift pump failures (1998-2002)
- Head gasket failures across all model years
- 53 block casting imperfections (1998-2000) leading to coolant and oil leaks
- Valve seat failures causing catastrophic engine damage (2003 and newer)
6.7L Cummins
- Valve seat failures causing catastrophic engine damage (2007.5 and newer)
- Turbocharger failures, VGT actuator issues, and EGR cooler problems (2007.5 and newer)
- Grid heater nut failures dropping into cylinders, causing severe damage
- Lifter failures in 2019 and newer models due to failed roller lifters
- CP4 pump failures (2019-2020), resolved with CP3 conversions for improved reliability
General Issues Across Cummins Engines
- Loud knocking sounds traced to injector problems
- Lift pump and fuel pump failures leading to fuel inefficiencies
- Head gasket failures
Why Choose Us for Cummins Diesel Repairs?
At Unlimited Diesel Performance, we don’t just work on Cummins engines—we live and breathe diesel. Here’s why our clients trust us to fuel their addiction to performance:
- Unmatched Expertise: Since 2004, we’ve specialized in Cummins engines, building extensive knowledge across all models.
- Advanced Solutions: From state-of-the-art diagnostics to our in-house machine shop, we tackle even the toughest challenges with precision.
- Customer-Centered Service: Through our Complete Vehicle Health Inspection, clear communication, and expert recommendations, we prioritize your satisfaction every step of the way.
- Mission-Driven Care: Guided by our mission, “We fuel your passion for diesel performance,” we deliver positive results that exceed expectations.
Schedule Your Cummins Diesel Repair Today
When your Cummins engine needs expert care, trust the team at Unlimited Diesel Performance. Whether you’re looking for diagnostics, repairs, or performance upgrades, we’ll deliver results that exceed your expectations.
Call us today at (740)-569-1319 or visit us at 408 Logan-Thornville Rd NE, Bremen, OH 43107. Let us help fuel your passion for Cummins’s diesel performance!