Diesel engines - maintenance and common problems DPF, EGR, turbo, injectors
DPF, EGR, injectors and turbo - what diesel drivers need to know. Fault symptoms, maintenance tips and how to extend engine life from workshop experience.
How to extend diesel engine life
Diesel engines are a different story than petrol ones. They are sensitive to fuel quality, dislike short trips, and DPF, EGR and turbo require a specific approach to maintenance. Here we share workshop experience on what actually extends the life of a diesel vehicle, which symptoms not to ignore and when it is time for service.
You Put the Wrong Fuel In - How to Prevent Costly Damage
Petrol in a diesel or diesel in a petrol car? Here's what to do at the pump, whether to start the engine, and how much it can cost if you get it wrong. Practical steps without the panic.
Read guide →Diesel fuel filter, when to change it and symptoms of clogging
A diesel fuel filter also works as a water separator. How to spot the symptoms of clogging, when to change it and why bleeding the system is a must.
Read guide →Vacuum pump on a diesel, failure symptoms and why the brake pedal goes hard
A rock-hard brake pedal on a diesel usually points to the vacuum pump. Symptoms, 1.9 vs 2.0 TDI tandem pump differences, and what to do before driving further.
Read guide →How to spot a faulty MAP sensor and how to test it
The MAP sensor measures intake manifold pressure and affects mixture and ignition. We cover failure symptoms, how to test it, and when to replace it.
Read guide →AdBlue and the SCR system on diesels: what it is, how it works and common faults
AdBlue, SCR catalyst and NOx sensors on Euro 6 diesels: how the system works, warning signs of a fault and what to do before the engine goes into limp mode.
Read guide →Swirl Flaps on TDI Engines - Why They Fail and What to Do
Swirl flaps on TDI engines cause fault codes and power loss when they seize or snap. Which codes appear, what happens if one falls into the cylinder, and fixes.
Read guide →Car Hard to Start in Cold Weather - Possible Reasons
Car struggles to start in the cold? Weak battery, worn glow plugs, old spark plugs and fuel system issues are the usual reasons. How to tell which one it is.
Read guide →How to Spot a Problem with Your Fuel Injectors
Symptoms of faulty injectors on diesel and petrol engines. When cleaning is enough and when replacement is the only option.
Read guide →What Is a DPF Filter and Why Does It Get Clogged
The DPF filter on diesel vehicles - what it does, why it clogs, and how to prevent an expensive repair.
Read guide →Most Common Diesel Engine Problems Every Owner Should Know
An overview of typical diesel engine failures and weak points. From our workshop experience since 1996.
Read guide →EGR Valve: What It Is, Why It Clogs, and How to Spot the Problem
The EGR valve is a frequent source of trouble on diesel engines. We explain what it does, why it fails, and what to do about it.
Read guide →Diesel Turbo - How to Make It Last Longer
A turbo replacement is expensive. Here is how to extend your turbo's life and how to spot the first signs of trouble.
Read guide →Diesel Glow Plugs: Symptoms of Failure and When to Replace Them
Car struggling to start in the cold? Glow plugs are a common culprit. How to spot the problem and what replacement costs.
Read guide →Diesel Injectors - Symptoms of Failure and What to Expect
Faulty diesel injectors cause a range of problems. How to spot a failing injector and what your repair options are.
Read guide →Why Short Trips Are Killing Your Diesel Engine
Driving your diesel only around town on short trips? Here is why that is the worst thing for your engine.
Read guide →How to Maintain a Diesel Car So It Lasts
Oil quality, filter changes, DPF regeneration and avoiding short trips keep a diesel running past 300,000 km. A maintenance checklist from workshop experience.
Read guide →High-Pressure Fuel Pump on a Diesel - Symptoms of Failure
The high-pressure pump is the heart of a common rail system. How to recognize when it starts to fail.
Read guide →Diesel or Petrol - Which Is Better in 2026?
An honest comparison of diesel vs petrol for drivers in Bosnia. Which engine makes more sense for your situation.
Read guide →Bad Fuel and Water in the Tank - How to Protect Your Diesel Engine
Poor fuel quality and moisture in the tank can cause serious damage to a diesel engine. Here is how to protect yourself.
Read guide →Intercooler on a Diesel: What It Does and When It Becomes a Problem
The intercooler cools turbo air before it enters the engine. A leak or clog causes power loss, higher fuel consumption and can lead to turbo damage over time.
Read guide →Why Your Diesel Smokes on Cold Start and When It Is a Problem
Your diesel puffs white or gray smoke on cold start? We explain when it is normal and when it is a sign of trouble.
Read guide →Got a problem
with your vehicle?
For an inspection, service or to discuss your vehicle, call us or send a message. If you're not sure what the fault is, describe the symptoms and vehicle model.
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Banja Luka, Republika Srpska
Bosnia and Herzegovina