Cummins Repair in Spokane, WA – Cummins Service

Reliable Cummins Repair in Spokane, WA on Monroe Street

If you’re looking for top-tier Cummins repair in Spokane, WA, look no further than Tune Tech Full Service Auto Repair. Our Monroe Street location specializes in diesel engine service, giving you peace of mind that your Ram truck or other Cummins-powered vehicle is in capable hands. Whether it’s diagnostics, maintenance, or full-on repair, our experienced diesel mechanics have the tools and training to keep your Cummins running strong.

At Tune Tech, we know Cummins engines inside and out—from the 5.9L and 6.7L turbo diesels to more complex systems found in commercial and fleet vehicles. We’re not just your average auto repair shop—we’re a Cummins repair shop with a passion for diesel power and a commitment to quality, efficiency, and service that goes the extra mile.

Why Cummins Engines Need Specialized Care

Cummins engines are known for their power, longevity, and performance—but they’re also complex. To keep them running at peak efficiency, you need a diesel mechanic with the right tools, training, and experience. At our diesel-specific location on Monroe Street in Spokane, we’re set up to handle everything from routine diesel maintenance to advanced engine diagnostics and component repairs.

Common Cummins Engine Issues We Fix

• Fuel System Problems – Faulty injectors, failing lift pumps, and clogged fuel filters can restrict performance.

• Turbocharger Failure – A worn turbo can cause power loss, black smoke, and poor fuel economy.

• Excessive Smoke or Noise – Often linked to EGR, sensors, or fuel delivery issues.

• Check Engine Light or Warning Lights – Our diagnostics will trace the root cause fast.

• Starting Problems – Issues with batteries, glow plugs, or injection timing.

Our Diesel Engine Services for Cummins

Whether you’re driving a Dodge Ram 2500 with a 6.7L Cummins or managing a fleet of diesel work trucks, Tune Tech Full Service Auto Repair delivers precise, efficient repairs that get you back on the road quickly.

Full Range of Cummins Services

• Engine Diagnostics & Troubleshooting

• Fuel System Repairs & Injector Replacement

• Turbocharger Service & Replacement

• EGR & DPF Cleaning or Replacement

• Glow Plug Testing & Replacement

• Cooling System Repairs

• Oil & Filter Changes with Diesel-Specific Products

• Exhaust System Service

• Battery Testing & Charging Systems

• Preventative Diesel Maintenance Packages

Why Choose Tune Tech for Cummins Repairs?

• Certified diesel mechanics with years of Cummins experience

• Advanced diagnostics for pinpoint accuracy

• Quick turnaround times with honest assessments

• Only OEM-quality or better parts used

• Diesel-specific equipment at our Monroe Street location

• Family-owned, locally trusted auto repair shop in Spokane

Signs You Need Cummins Repair or Service

It’s important to recognize when your Cummins engine might need attention. Early signs can help prevent costly damage down the road.

Watch for These Red Flags:

• Hard starts or no start conditions

• Loss of power under load

• Rough idling or shaking at stoplights

• Increased exhaust smoke (blue, white, or black)

• Decreased towing performance

• Poor fuel efficiency

• Strange noises from the turbo or engine

• Dashboard warning lights or codes

If you’re experiencing any of these, bring your truck to our diesel team on Monroe Street for fast, accurate diagnosis.

Trusted by Cummins Owners Across Spokane

From farmers and contractors to daily drivers and RV owners, Cummins engines are built to perform under pressure. But even these powerhouse engines need maintenance and repairs now and then. At Tune Tech, we’re proud to be Spokane’s trusted name in diesel engine service, with special focus on Cummins powertrains.

We’ve earned our reputation one satisfied customer at a time. No gimmicks, no guesswork—just straightforward service and high-quality repairs that last.

Diesel Maintenance Tips for Cummins Drivers

Want to get the most life and power from your Cummins engine? Stick to a routine maintenance schedule.

Smart Maintenance for Cummins Engines:

• Change your oil and fuel filters regularly

• Use the correct diesel-rated fluids and filters

• Keep the air filter clean and unrestricted

• Don’t ignore minor starting issues or smoke

• Watch your coolant levels and flush regularly

• Use high-quality fuel from trusted sources

• Keep an eye on towing loads and exhaust temps

Need help creating a diesel maintenance plan? Just ask—our techs will tailor a schedule based on your mileage and usage.

Frequently Asked Questions (FAQs) About Cummins Service on Monroe Street

Q: Do I need to go to a dealership for Cummins service?
No. Our North Monroe Street location has factory-grade tools and trained diesel mechanics to service your Cummins engine, often with quicker turnaround and lower cost than the dealership.

Q: How often should I change the oil in my Cummins truck?
Depending on usage and model, oil changes should occur every 5,000–7,500 miles. Heavy-duty or towing applications may require more frequent service.

Q: My truck smokes on startup—should I be worried?
Maybe. White smoke may indicate unburned fuel or coolant. Black smoke could mean a rich fuel condition. Let our techs inspect it to be sure.

Q: What’s included in a diesel tune-up?
Our diesel tune-ups include engine diagnostics, injector inspection, glow plug check, oil and filter change, fuel filter replacement, and air filter check.

Q: Do you work on fleet or commercial diesel vehicles?
Yes! We proudly offer commercial and fleet diesel maintenance and repair. Ask about priority scheduling and preventative maintenance plans.

Routine Maintenance for Cummins Engines

Proper maintenance is the key to preventing major mechanical issues and keeping your Cummins engine operating efficiently. Routine services such as oil and fuel filter changes, coolant system flushes, and valve adjustments help protect critical components. Regular turbocharger inspections and glow plug servicing further enhance engine reliability. Our technicians follow Cummins’ recommended service intervals to ensure optimal performance and prevent premature wear.

Fuel System and Turbocharger Service

The fuel injection system and turbocharger are essential to a Cummins engine’s efficiency and power output. If you experience hard starts, excessive exhaust smoke, or reduced fuel economy, there could be an issue with the fuel injectors or high-pressure fuel pump. A failing turbocharger may also cause power loss, strange noises, or excessive boost lag. Our specialists perform thorough diagnostics to identify and repair these issues, ensuring your Cummins engine delivers reliable performance.

Exhaust and Emissions System Repairs

Cummins engines utilize advanced emissions control systems, including diesel particulate filters (DPF), selective catalytic reduction (SCR), and exhaust gas recirculation (EGR) systems. A clogged DPF, malfunctioning EGR valve, or failing DEF system can lead to reduced power, poor fuel efficiency, and frequent regeneration cycles. Our technicians provide professional cleaning and repairs to keep your emissions system functioning properly and compliant with regulations.

Cooling and Transmission System Service

Heavy-duty engines generate significant heat, making a well-maintained cooling system and transmission essential for long-term durability. Overheating, slipping gears, and delayed acceleration are warning signs that your truck needs attention. We offer radiator flushes, transmission fluid replacements, and drivetrain servicing to keep your Cummins engine performing under heavy workloads.

Schedule Your Cummins with the Diesel Experts at Tune Tech!

Keeping your Cummins engine in top shape requires specialized knowledge and professional service. At Tune Tech’s Monroe Street location, we provide high-quality Cummins repair in Spokane, WA, ensuring your truck stays reliable and powerful. Contact us today to schedule an appointment and keep your Cummins engine running at peak efficiency.