Exhaust Manifold: Cracks, Leaks, Replacement & Torque Guide
Spot exhaust manifold cracks, gasket leaks and broken studs on heavy trucks. Learn diagnosis, correct replacement steps, torque values and tightening sequence.
Engine
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Articles
What Is an EGR Valve? Failure Symptoms and Cleaning (Heavy Commercial Vehicles)
Learn what an EGR valve does, common failure symptoms, causes, and proper cleaning/replacement guidance for heavy commercial diesel vehicles.
Burnt Cylinder Head Gasket: Symptoms and Causes
Learn the symptoms and causes of a burnt cylinder head gasket in heavy commercial vehicles, testing methods, and the correct repair approach.
What Is a Turbocharger? Turbo Failure Symptoms in Diesel and Heavy-Duty Vehicles
Learn what a turbocharger does, how it works, and the key symptoms of turbo failure in trucks and buses. VADEN ORIGINAL engine parts guide.
Low Engine Oil Pressure: Symptoms, Causes, and the Role of the Oil Pump
Learn the causes and symptoms of low engine oil pressure in heavy commercial vehicles, oil pump failure signs, and VADEN ORIGINAL oil pump solutions.
Crankshaft Seal Oil Leak: Symptoms and Causes
Symptoms and causes of a crankshaft seal oil leak, plus the difference between front and rear crankshaft seals. What to do if an engine seal is leaking oil
What Is a Crankshaft? Function, Failure Symptoms and Maintenance
A comprehensive VADEN ORIGINAL guide to what a crankshaft is, what it does, failure symptoms, the crankshaft position sensor, and maintenance in heavy-duty
When Should a Timing Belt Be Replaced? What Happens If It Breaks?
The function of the timing belt, when it should be replaced, the engine damage caused by a failure, and its relationship with the tensioner bearing. A tech
What Is a V-Belt? Its Function, Noise, and Tensioner Pulley Failure
The function of the V-belt in heavy commercial vehicles, the role of the tensioner pulley, noise and failure symptoms, what happens if the belt snaps, and
What Is Valve (Rocker Arm) Clearance Adjustment? Why and When Is It Needed?
What valve (rocker arm) clearance adjustment is in heavy commercial diesel engines, why valve clearance is needed, tapping and power-loss symptoms, and whe
