Engine Maintenance
Overhead Valve Adjustments
Proper overhead valve adjustments are one of the most important — and most overlooked — parts of diesel engine maintenance. At Redneck Diesel Performance, we perform precise overhead adjustments on semi-trucks and medium duty diesel engines to keep your motor running smooth, efficient, and built to last. Whether you’re running a Cummins, Detroit, Paccar, CAT, or MaxxForce engine, keeping your valve lash in spec is key to maintaining power, fuel economy, and reliability.
When your overhead is out of adjustment, you’ll start noticing rough idle, loss of power, poor fuel mileage, excessive engine noise, and uneven performance. Left unchecked, improper valve settings can lead to premature wear on internal engine components, costly repairs, and even major engine failure. That’s why regular diesel overhead adjustments aren’t just maintenance — they’re protection for your investment.
While we’re performing your overhead valve set, we also take the time to inspect critical components, including checking your crankshaft condition and valvetrain wear, so we can catch problems early before they turn into downtime. It’s all about staying ahead of the damage instead of reacting to it.
At Redneck Diesel Performance, we don’t cut corners — we set it right, check it thoroughly, and make sure your engine is dialed in the way it ought to be. If it’s been a while since your last overhead adjustment, or you’re starting to notice performance issues, bring your rig in and let us keep you running strong mile after mile.
Internal Inspections
When it comes to keeping your engine alive for the long haul, internal component inspections are where the real problems get caught early. At Redneck Diesel Performance, we go beyond surface-level checks and inspect critical components like rocker arms, injectors, camshafts, and liner protrusion to make sure everything inside your engine is working exactly how it should.
Worn rocker arms can throw off valve operation, weak or failing injectors can cause poor combustion and power loss, and improper liner protrusion can lead to head gasket failure and serious internal damage. These aren’t issues you always see right away — but when they show up, they show up expensive.
Our diesel engine internal inspections are designed to catch wear before it turns into a full rebuild. Whether you’re already in for an overhead adjustment or chasing performance issues, we take the time to check the details that most shops overlook.
At Redneck Diesel Performance, we believe in fixing problems before they leave you stranded. If you want your Cummins, Detroit, Paccar, CAT, or MaxxForce engine to last, it starts with knowing what’s going on inside it. Bring it in and let us take a real look under the hood — not just the easy stuff.
Internal Component Replacement Or Upgrades
When internal parts start wearing out, you’ve got two options — patch it up, or fix it right. At Redneck Diesel Performance, we handle full diesel engine internal component replacement and performance upgrades to keep your truck running stronger, longer, and more reliable.
We replace and upgrade critical components like injectors, camshafts, rocker arms, pistons, liners, bearings, and valvetrain parts on Cummins, Detroit, Paccar, CAT, and MaxxForce engines. Whether you’re dealing with worn-out parts, a failed component, or looking to improve performance and durability, we build your engine the way it’s meant to be — no shortcuts.
Failing internal components don’t just affect performance — they lead to loss of power, poor fuel economy, excessive wear, and eventual engine failure. Upgrading or replacing these parts the right way helps restore reliability and can even improve how your truck pulls, runs, and holds up under load.
Our diesel engine internal repair and upgrade services are built around precision and long-term performance. We don’t just swap parts — we inspect, measure, and make sure everything is within spec so your engine leaves stronger than it came in.
If your engine’s showing signs of internal wear or you’re ready to upgrade your setup, bring it to Redneck Diesel Performance — we’ll build it to handle the work you throw at it.