by Kyle Cooper | Jul 24, 2025 | Diagnostic Guides and Troubleshooting, Diesel Repair, Maintenance Tips and Procedures
The PACCAR PX9 engine remains a top choice for medium-duty commercial trucks. The 2021 to 2023 models brought even more precision in emissions performance and diagnostics, making them popular across vocational fleets, delivery trucks, and vocational haulers. Whether...
by Kyle Cooper | Jul 23, 2025 | Diagnostic Guides and Troubleshooting, Diesel Repair, Maintenance Tips and Procedures
The PACCAR PX9 engine, produced between 2013 and 2016, is known for its balance of power, fuel efficiency, and reliability in medium- and heavy-duty trucks. Like any modern diesel engine, staying on top of fault codes is key to minimizing downtime and avoiding costly...
by Kyle Cooper | Jul 22, 2025 | Diagnostic Guides and Troubleshooting, Diesel Repair, Maintenance Tips and Procedures
The Mack MP7 engine continued to power regional haul and vocational trucks through 2025 with a balance of fuel efficiency and performance. From the Mack Granite to the Anthem, having a complete fault code list is key to cutting downtime and getting trucks back on the...
by Kyle Cooper | Jul 22, 2025 | Diagnostic Guides and Troubleshooting, Diesel Repair, Maintenance Tips and Procedures
The Cummins L9 engine for 2024–2025 continues to be a top choice for heavy-duty trucks, buses, and vocational applications thanks to its balance of power, fuel efficiency, and durability. Keeping these engines running at their best means staying ahead of fault codes...
by Kyle Cooper | Jul 21, 2025 | Diagnostic Guides and Troubleshooting, Diesel Repair, Maintenance Tips and Procedures
The Cummins L9 engine has been a trusted workhorse for heavy-duty trucks and buses from 2021 through 2023. Known for its balance of power and fuel efficiency, this engine helps fleets stay on the road with less downtime. Keeping a clear fault code reference on hand...
by Kyle Cooper | Jul 19, 2025 | Diagnostic Guides and Troubleshooting, Diesel Repair, Maintenance Tips and Procedures
The Cummins L9 engine (2016–2020) continues to be a popular midrange diesel choice for medium- and heavy-duty trucks, buses, and construction equipment. Known for its reliability and fuel efficiency, the L9 relies on clear fault code diagnostics to keep downtime low...
