If you’ve ever tried to compare diesel fuel pumps, you’ve probably run into the same problem:
👉 Plenty of brand names
👉 Almost no clear explanations
If you’re in sales, diagnostics, or repairs, you’re expected to understand:
This guide breaks it down in a way that actually makes sense.
Continue reading Diesel Fuel Pump Brands Explained: Bosch vs Delphi vs Denso vs Stanadyne (And More)A healthy diesel engine should produce little to no visible smoke once it reaches normal operating temperature.
So when smoke starts coming out of the exhaust, it is usually a sign that something inside the engine is not working as intended.
The good news is that the color of the smoke can provide valuable clues about what is happening. In many cases, experienced diesel technicians can narrow down potential causes simply by observing the exhaust before they ever connect a diagnostic tool.
Whether you’re operating a Caterpillar, Cummins, Detroit Diesel, International/Navistar, Paccar, Mack, Volvo, John Deere, Ford, Mercedes-Benz, Chevy/GMC, Dodge, Perkins, or another diesel platform, understanding what your exhaust is trying to tell you can help identify problems before they become major repairs.
Continue reading Diesel Engine Smoke Colors: What White, Black, and Blue Smoke Mean
You finished the in-frame. New liners, pistons, rings – everything looks right.
But now you’re seeing:
This isn’t uncommon on Cummins ISX engines – and it usually comes down to one issue:
Improper liner protrusion and ring seating during install.
If you don’t get this right, your rebuild won’t last – no matter how good your parts are.
Continue reading Cummins ISX In-Frame Rebuild Failure: Why Your New Liners Aren’t Sealing (And How to Fix It)Every CDL driver hopes they never need one.
Most passenger vehicle drivers have seen them but never really thought about them.
And when one is used, it usually makes the local news. We’re talking about runaway truck ramps.
These emergency escape lanes are built for one purpose: safely stopping heavy vehicles that have lost braking capability on steep mountain descents.
While modern braking systems are extremely reliable, brake failure can still occur when a truck is operating under severe conditions. When it does, a runaway truck ramp can mean the difference between a close call and a catastrophic accident.
Understanding how these ramps work—and why drivers sometimes need them—provides valuable insight into one of the most important safety systems on America’s highways.
Continue reading What Is a Runaway Truck Ramp and Why Are They Needed?
If your Cummins ISX is starting to lose power, burn oil, or show signs of internal wear, you’re not alone. These engines are built to work – but over time, even the best engines need a rebuild.
The real question is: Are you getting the right rebuild kit the first time?
Because one wrong part… one missed component… or one bad fitment can turn a rebuild into a repeat failure.
Before you even think about parts, you need to know if your engine is truly at that point.
Here are some of the most common warning signs:
If you’re seeing more than one of these, it’s usually not a quick fix – it’s time to start planning for a full rebuild.
A complete engine rebuild kit is designed to give you everything needed to restore performance, reliability, and efficiency.
At a high level, most kits include:
Some kits may also include upgraded or performance components depending on your application.
The key isn’t just having parts – it’s having the right parts matched correctly to your engine.
Not all ISX engines are built the same. There are differences in:
… which can all impact what parts actually fit your engine.
That’s why at Highway and Heavy Parts, we focus on verified fitment before anything ships.
Instead of guessing, our team checks your ESN to make sure every part in your kit is correct the first time.
A rebuild isn’t cheap. But doing it twice? That’s where things really get expensive.
Here’s what we see happen all the time:
That’s why choosing the right supplier matters just as much as choosing the right parts.
When you’re rebuilding an engine, you don’t just need parts – you need confidence that the job is being done right.
At Highway and Heavy Parts, every rebuild kit is backed by:
These kits are built with all-new components – no remanufactured parts, no cores required – and are manufactured to strict quality standards for long-term durability.
If you’re unsure whether your engine needs a rebuild or which kit is right, their team will help you figure it out before you buy.
If your ISX is showing signs of wear, waiting only leads to more damage—and more expensive repairs down the road.
An inframe rebuild done at the right time restores performance, improves efficiency, and extends the life of your engine without the cost of a full replacement.
Call 844-304-7688 to speak with a diesel parts specialist
or visit highwayandheavyparts.com to find the right rebuild kit for your engine.
From diagnosis to delivery, Highway and Heavy Parts has your back.
Not all engine noise is the same.
A ticking sound and a knocking sound may seem similar, but they point to very different issues inside your diesel engine.
In many cases, both originate in the valve train system – and both can escalate into major engine damage if ignored.
Continue reading Diesel Engine Ticking vs Knocking: How to Diagnose Valve Train Noise Before It Causes Damage
The Cummins ISC-G is not just a diesel engine running a different fuel.
It is a spark-ignited natural gas engine, and that changes how the cylinder head is designed, how it wears, and how it fails.
If you treat it like a diesel cylinder head, you will miss critical differences that directly impact performance and longevity.
Continue reading Cummins ISC-G Cylinder Head: What Makes Natural Gas Cylinder Heads Different
Belt noise on a diesel engine is not just an annoyance.
It is often an early warning sign of misalignment, bearing failure, or improper belt tension.
Ignoring it can lead to:
Proper diagnosis requires understanding how the belt system operates under load.
Continue reading How to Diagnose Diesel Engine Belt Noise: Identifying Pulley, Tensioner, and Accessory FailuresIf you’ve ever wondered why a heavy-duty diesel engine won’t continue revving forever, the answer is simple:
The engine won’t let you.
Every heavy-duty diesel engine has a governor whose job is to control engine speed by regulating fuel delivery. Older engines accomplished this mechanically using springs and spinning flyweights inside the injection pump. Modern diesel engines perform the same function electronically through the Engine Control Module (ECM).
While many drivers think of governors as performance limiters, they’re actually one of the engine’s most important safety systems.
Without a governor, a diesel engine could quickly exceed its safe operating speed, increasing the risk of catastrophic engine damage.
In this article, we’ll explain how diesel governors work, why they exist, and how they help protect today’s heavy-duty engines.
The Caterpillar C13 remains one of the top heavy-duty diesel engines used in highway trucks, vocational applications, and heavy-haul operations.
Known for:
…the C13 also became well known for its twin-turbo configuration and airflow-sensitive performance characteristics.
Because of this, many Caterpillar C13 upgrades focus on:
However, not every upgrade improves reliability.
The best Caterpillar C13 upgrades typically balance:
The cylinder head on a Caterpillar C10 or C12 isn’t just a casting – it’s where combustion, airflow, and cooling all come together.
And when it fails, it usually doesn’t fail quietly.
Cracked heads, worn valve seats, and injector cup issues are some of the most common – and most expensive – problems we see on these engines. If you’re already chasing coolant loss, misfires, or compression issues, there’s a good chance the cylinder head is involved.
Continue reading Caterpillar C10 and C12 Cylinder Head Failure: Cracking, Valve Seat Wear, and When Replacement Is Required
If you’ve ever dealt with a diesel fuel system issue, you know how quickly things can escalate. What starts as a minor problem – like a slight misfire, rough idle, or extra smoke – can quickly turn into major engine damage if it’s not addressed early.
That’s what makes modern diesel fuel systems so challenging.
They’re not just sensitive – they’re precise to the point where even small disruptions can create serious problems. When something in the system changes – even slightly – it directly impacts combustion. If you’re already dealing with fuel system issues or looking to prevent them, you can explore our full range of diesel fuel system components designed for reliability and performance.
Continue reading Why Diesel Fuel Systems Are So Sensitive (And How Small Issues Turn Into Major Repairs)
