ENGINE REPAIR & REPLACEMENT

Expert Engine Repair & Replacement in Louisville, KY

Engine issues can leave you guessing, but at Barnes Auto Service, we bring clarity, confidence, and care to every engine repair. From warning lights to full replacements, we get to the root of the problem with advanced diagnostics and a no-pressure approach. Our Louisville team has spent over 40 years helping drivers make smart decisions about what’s under the hood, because fixing engines isn’t just what we do, it’s how we earn trust, one repair at a time.

Catch It Early:Common Clues Your Engine Needs a Second Look

Engine problems don’t always start with a breakdown. Most start small, with a faint ticking sound, reduced power, or a warning light on the dash. Ignoring them can lead to more expensive repairs down the road, or worse, full engine failure.

If you notice any of these signs, schedule a visit with our engine repair shop in Louisville, KY:

The check engine light is flashing or steady
Rough idling or stalling
Engine misfire or hesitation
Decrease in fuel efficiency
Unusual engine noises (knocking, ticking, grinding)
Burning oil smell or smoke from the exhaust
The engine is running hot, or the coolant levels are dropping frequently

At Barnes Auto Service, our ASE-certified technicians specialize in accurate diagnostics and proactive solutions, because catching a problem early can save your engine (and your wallet).

“The difference between good and great? Just a little extra effort.”

– Biggie Munn

Every Service Your Engine Needs, All Under One Roof

From pinpointing small issues to full engine replacement, we offer end-to-end care for every vehicle that comes through our bays. Our clean, climate-controlled shop features OEM-compatible diagnostic tools and equipment to service domestic, European, Asian, diesel, hybrid, and electric vehicles.

Engine Diagnostics & Performance Testing

We use advanced diagnostics and performance testing to get to the root of misfires, power loss, and check engine lights. While we service all makes and models, our team is equipped with dealership-level scan tools for Toyota, Honda, Ford, Chevy, and more, giving you accurate results and reliable repairs without the dealership hassle.

Check Engine Light Diagnosis

A check engine light can mean anything from a loose gas cap to a failing catalytic converter. Our team reads the codes, runs functional tests, and explains exactly what’s going on with no scare tactics and no guessing.

Misfire Diagnostic & Repair

Misfires affect engine performance, fuel economy, and emissions. We test ignition coils, spark plugs, injectors, compression, and sensor data to restore smooth, efficient engine operation.

Fuel System Repair

We clean or replace fuel injectors, filters, pumps, and lines to ensure your engine gets the right fuel mixture and pressure, key to starting, accelerating, and cruising reliably.

Exhaust System & Emissions

From oxygen sensors and catalytic converters to exhaust leaks and backpressure issues, we keep your emissions system running clean and legal.

Cooling System Service

Overheating is one of the top causes of engine damage. We test thermostats, radiators, water pumps, and coolant sensors to keep your engine temperature in check. Learn more on our Cooling System Repair page.

Gaskets, Seals & Internal Repairs

Oil leaks? Blown head gasket? Timing chain rattle? Our team can handle complex engine repairs, including head gaskets, valve cover gaskets, timing components, and more, with precision and care.

Electrical & Charging System Diagnostics

Many engine issues stem from failing alternators, sensors, relays, or grounds. Our electrical diagnostics team checks for parasitic draws, sensor faults, and communication issues to eliminate false codes and real problems.

Engine Replacements

Sometimes, an engine needs a fresh start. We perform complete engine replacements using high-quality OEM or remanufactured units for long-term reliability. We’ll walk you through options, pricing, and warranty coverage so you can make the right decision for your vehicle.

JASPER Engine Replacement You Can Trust

As a JASPER Platinum Level Service Center, we install remanufactured engines built to meet or exceed OEM standards. You’ll receive JASPER’s 3-year/100,000-mile nationwide warranty, plus available perks like towing reimbursement, rental car coverage, and premium labor protection. It’s trusted quality and lasting peace of mind, backed by decades of engine expertise.

Customer-FriendlyAmenities

Maggie gives these extras two paws up.

Text-to-Pay

24-Hour Drop-Off & Pick-Up

Waiting Room with Free Wi-Fi – Pet Friendly

CFNA Financing Options

Towing Partner: Advantage Towing – (502) 749-2233

10% Discount for First Responders, Teachers, Nurses, Police & Military

What Sets Our Engine Repair TeamApart in Louisville

Engine trouble isn’t just inconvenient, it’s disruptive. That’s why Barnes Auto Service takes your engine issue seriously, with expert attention and no runaround.

Elite Technicians, Proven Skills

With 3 ASE Master Techs and a National Auto Value Runner-Up Tech on staff, your engine is in the hands of true professionals.

Advanced Diagnostics for Complex Issues

From check engine lights to misfires and oil leaks, we diagnose with precision and repair with care using OEM-compatible equipment.

Rooted in Trust

We're honored to hold an A+ BBB rating, be named a Neighborhood Favorite, and actively give back to the community we serve.

Convenient Help, Start to Finish

Need a tow? We’ve got you. Enjoy flexible scheduling, digital updates, 24-hour drop-off, and a comfortable, pet-friendly waiting area.

Clear Communication, No Surprises

From the first conversation to the final test drive, we keep you informed every step of the way with honest estimates, digital inspections, and regular updates.

Easy, convenient payments with no credit card processing fee

Quality repairs without surprise costs.

We are the bestOf The Best

Don’t just take our word for it—see why we’re Louisville’s top-rated auto shop! Check out our reviews and hear from satisfied customers who trust us to keep their vehicles running smoothly.

Engine Trouble? Let’s Fix It.Call or Book Online Now

A small engine issue today can turn into a major problem tomorrow. Whether you’re dealing with a leak, warning light, or just a sense that something’s off, don’t wait. Get the answers you need from Louisville’s trusted engine repair experts. Visit Barnes Auto Service at 3800 Bishop Lane, Louisville, KY 40218, call 502-966-8644, or schedule online at barnesautoservice.com.

We serve drivers throughout Fern Creek, Middletown, St. Matthews, Mt. Washington, Prospect, Crestwood, Audubon Park, and the greater Louisville area. The difference between good and great? We bring that little extra effort to every job.