Diagnostics
Rough Idle in a Diesel Engine: Causes and Diagnosis
Why a diesel engine shakes or hunts at idle: injectors, air in the fuel, EGR, sensors, filters and engine mounts. How to diagnose it in order.
DiagnosticsDiesel Engine Won't Start: Common Causes and How to Diagnose Them
What to check when a diesel engine won't start: battery, fuel, air in the lines, glow plugs, injection pressure and sensors, in a logical order.
DiagnosticsDiesel Engine Knocking and Noises: Common Causes
Why a diesel engine knocks or makes noises: normal diesel clatter, injectors, injection timing, fuel, clearances and turbo. How to tell normal from serious.
DiagnosticsDiesel Engine Using Too Much Fuel: Causes and How to Reduce It
Why a diesel engine uses more fuel than normal: injectors, filters, turbo, tire pressure, EGR, DPF and driving habits. How to diagnose it.
DiagnosticsDiesel Engine Losing Power: Causes and How to Diagnose It
Why a diesel engine loses power: filters, air, turbo, injectors, pump, EGR and DPF. The most common causes and how they are diagnosed in order.
DiagnosticsBlack, White or Blue Smoke From a Diesel Engine: What Each Color Means
Why a diesel engine blows black, white or blue smoke, what causes each color, and how the problem is diagnosed before any parts are replaced.