Trusted Cummins Diesel Repair in Pataskala, OH

Serious Power Deserves Serious Repairs

Cummins diesel engines are known for their pulling power and legendary durability especially the 6.7L found in Ram 2500 and 3500 trucks. But even the toughest diesel needs attention when problems start. Whether it’s a long crank, white smoke, turbo lag, or electrical gremlins, these engines demand diesel techs who know their systems front to back.

At Tanzillo Automotive, we specialize in Cummins diesel repair. We work on 6.7L Ram trucks every day and understand what it takes to keep them running strong. Our ASE-certified team uses top-tier diagnostics to identify and repair issues without guesswork.

Our Proven Service Solutions for Cummins Engines

Every Cummins engine has its own patterns, especially the 6.7L platform. At Tanzillo Automotive, we provide focused diagnostics and repairs backed by real diesel experience. Whether you’re chasing a power issue, emissions fault, or cold-start problem, these are the services that keep your truck dependable and ready for work.

Advanced Diagnostics for 6.7L Engines – We use OE-level scan tools and scopes to quickly pinpoint issues like low power, throttle lag, or check engine lights across the 6.7L Cummins platform.
Injector Testing & Fuel System Repairs – From hard starts to fuel smoke, we test injectors, pumps, and lines to correct restriction or contamination and restore clean fuel delivery.
Turbocharger & Boost System Service – We diagnose turbo vane and actuator problems to eliminate lag, fix boost pressure, and restore throttle response.
Emissions System Diagnosis & Repair – Whether it’s a regen issue or DEF fault, we service EGR, DPF, and SCR systems using factory-grade equipment to keep your truck clean and compliant.
Cooling & Electrical Repairs – From water pumps to grid heaters, we repair the systems that keep your Cummins cool, starting strong, and running reliably.

Cummins Issues We Know Inside and Out

From turbo failures to fuel delivery concerns, our team has seen the most common and the most frustrating Cummins problems come through the shop. These are the issues we fix every day with tested solutions that restore performance and protect your engine long term.

Turbocharger Failure

The VGT turbos used in 6.7L Cummins engines can stick, wear out, or cause boost loss. We inspect and repair or replace worn turbo systems to restore power and drivability.

Injector Issues

Cummins injectors can suffer from internal leaks, misfires, or fuel contamination. We test, clean, or replace injectors to bring your fuel system back to full performance.

EGR & Emissions Problems

Clogged EGR valves or failing emission components can trigger check engine lights and poor performance. We perform full system diagnostics and emissions repairs that keep you compliant and on the road.

Hard Starts & Cold Weather Issues

A faulty grid heater or glow plug circuit can leave you stuck when temps drop. We verify electrical health, glow system timing, and fuel pressure to fix cold-start problems.

Fuel System Failures

CP3 and CP4 pump failures, fuel leaks, or clogged filters can cause power loss or even engine damage. We address issues quickly to protect your Cummins from long-term wear.

Why Ram Truck Owners Trust Tanzillo Automotive

Cummins Repair Experts – We’ve worked on 6.7L Ram trucks day in and day out. From drivability issues to full system failures, we know exactly what these engines need.
Certified Diesel Technicians – Our ASE-certified team brings years of hands-on Cummins experience. We’ve solved the problems that other shops couldn’t figure out.
Advanced Tools & Equipment – We use dealer-level diagnostics, including OE scan tools and oscilloscope testing, to deliver accurate results without wasted time or parts.
Warranty-Backed Repairs – You can count on our work. Most repairs are backed by a 2-year/24,000-mile or 3-year/36,000-mile warranty.
Real Care for You & Your Truck – Customers trust us because we treat every diesel like it’s our own. That level of care is hard to find, and it shows in everything we do.
Service Made Simple – Enjoy a clean waiting area, early bird drop-off, and easy payment options online or by text.

Frequently Asked Questions

What are common issues with Cummins diesel engines?

Common issues with Cummins diesel engines include turbo failure, injector problems, EGR system faults, fuel system leaks, and emission-related issues.

How often should a Cummins diesel be serviced?

A Cummins diesel engine should be serviced every 5,000 to 7,500 miles, including oil changes, fuel filter replacements, and full system inspections.

Why is my Cummins blowing black smoke?

If your Cummins is blowing black smoke, it could be caused by a rich fuel mixture, a failed turbocharger, a clogged air filter, or injector problems.

What causes hard starts on a Cummins diesel?

Hard starts on a Cummins diesel are often caused by glow plug issues, fuel delivery problems, low compression, or a faulty grid heater.

Your Cummins Deserves Expert Care. Schedule Today!

Don’t let a small issue turn into a major repair. Strange noises, slow starts, or a check engine light may seem minor now, but they can lead to costly downtime if ignored. Whether you rely on your Ram for heavy-duty work, towing, or daily driving, we’re here to keep your Cummins diesel dependable, powerful, and ready for whatever the road throws at it.

Schedule your Cummins repair by calling 740-919-0830 or visiting 8282 National Rd SW, Pataskala, OH 43062. Drivers throughout Pataskala, Newark, and Johnstown count on Tanzillo Automotive for dealership-level Cummins repairs.