Truck Engine Repair, Rebuild & Conversion Services in Janesville, WI

Fleet owners face the unique challenge of maximizing fuel economy and improving reliability, all while running their businesses. At Block Diesel Repair in Janesville, Wisconsin, we’re engine experts. Our engine repair, rebuild, overhaul, and conversions are designed to help you achieve your goals.

Schedule Repair

Common Engine Repairs

Our team is equipped to handle common diesel engine repairs such as replacing worn or damaged fuel injectors, fixing leaks in the fuel system, replacing components, fixing issues with the glow plugs, and replacing the air filter or air intake system. We use state-of-the-art equipment and techniques to diagnose and repair any issues that may arise.

Our Engine Rebuild Service

Even with regular maintenance, it's only a matter of time before you need a rebuild. Our team is experienced in handling complete engine rebuilds, including replacing worn components like pistons, valves, fuel injectors, and anything else that is affecting performance. Engine rebuilds can be a cost-effective alternative to buying a new engine, and they can also improve the engine's performance, fuel economy, and reliability.

Why Convert Your Engine?

Converting your engine can have several benefits, including increased fuel efficiency, improved reliability, and better performance. Additionally, converting to a different type of diesel engine can improve the power and torque of your vehicle, which is perfect for owner-operators or fleet owners who are looking to switch to a high-demand industry.

We’re Engine Conversion Specialists

Our team of skilled technicians has extensive experience in converting engines, with certifications from the industry’s top engine manufacturers. We can convert gasoline engines to diesel engines, as well as swap out one type of diesel engine for another. Our conversions are tailored to your specific needs and include all the necessary steps required to complete the conversion successfully, so you can relax knowing you're in good hands. We’ll help you install your new engine, perform any necessary modifications to the vehicle, and install additional components such as electrical wiring and after-treatment components.

Warranty Protection

At Block Diesel Repair, we stand behind our work with warranty protection on all our engine work. Our warranty coverage, ranging from three months to two years, includes small engine repairs, complete engine repairs, engine overhauls, rebuilds, conversions, and defective parts. 

Contact Us

If you are looking for a reliable and experienced team to handle your engine repair, rebuild, overhaul, and conversion needs, look no further than Block Diesel Repair.

Schedule Repair
The service these guys give is awesome. Prices are very fair, and the work they do is fantastic. Good customer service, quality work and great price.
C & T S
M&M Carriers

Jeremy Shirah

Stars icon

Great job. My mechanic Mitch did an incredible job. Arrived exactly on time. Finished the repair in record time and the price was very reasonable. And all on a Sunday morning. Great job! Keep up the awesome service.

Brit Payjack

Stars icon

Thank you so much to Greg. We had an emergency after hours and he quickly got us and our horses back on the road. We are beyond grateful.

Tim Braun

Stars icon

They got me right in when I needed a repair during a trip. Fair pricing with quality work. Went there worried since on the road repairs can go so wrong but left very happy.