The Volvo D13 engine launched in 2007 with a focus on improving fuel economy, power output, and emissions compliance for the heavy-duty market. Equipped with EGR systems and advanced fuel injection technology, the 2007–2009 Volvo D13 engines became a popular choice...

The PACCAR MX-13 engine (2024–2025) represents the latest evolution in PACCAR's heavy-duty lineup, offering improved fuel economy, tighter emissions compliance, and even greater uptime reliability. Engine updates during this period included advanced calibration...

A tech is at the shop, laptop open, looking for torque specs on a valve cover. But the manual’s outdated. The online PDF won’t load on mobile. And no one has time to dig through a dozen pages to find one spec. That’s why we built the Technical Repair Documentation...

The PACCAR MX-13 engine (2021–2023) brought further enhancements in emissions control, fuel system precision, and onboard diagnostics—continuing PACCAR’s commitment to performance and uptime. These updates aligned with evolving EPA emissions standards and improved...

The PACCAR MX-13 engine continued to improve between 2017 and 2020, building on the foundation of previous models with updates to emissions performance, engine calibration, and onboard diagnostics. These engines remained a trusted choice for long-haul and vocational...

Wiring Diagrams That Save Time—and Your Sanity A tech is staring at a screen. Not frustrated yet—but close. The truck came in with a check engine light and an electrical fault. Nothing too complicated—if you can find the right circuit. But the diagram they pulled is...

The PACCAR MX-13 engine continued to evolve between 2013 and 2016, delivering better emissions performance, fuel economy, and reliability for heavy-duty fleets. With improved calibration, sensor systems, and compliance with EPA 2013 emissions standards, this version...

The PACCAR MX-13 engine, used in Peterbilt and Kenworth trucks, is known for its fuel efficiency, long service intervals, and smooth performance. The 2011–2012 models marked an early generation of the MX-13 with EPA 2010 emissions compliance, including Selective...

When a truck throws a fault code, the clock starts ticking. You need to know what it means, what caused it, and how to fix it—fast. That’s exactly why Diesel Repair’s Fault Code Database exists. Built for heavy-duty technicians and shop owners, this tool helps you...

Diesel Repair’s VIN Decoder is comprehensively designed to provide as much information as possible before users even scan for faults. With the VIN Decoder, you get complete coverage for all on-highway diesel vehicles: automotive (Ford, Chevrolet, RAM, and more), domestic AND import commercial trucks (HINO, Isuzu, Mitsubishi, FUSO, and more), RV, chassis, and specialty manufacturers. Diesel Repair’s VIN Decoder is monitored daily for failed VIN decodes (currently less than 0.01%). And when a decode fails, our team of experts immediately gathers the research to update our database.