Diesel engine Q&A

How Oil Viscosity Affects Engine Starting

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[Diesel engine Q&A ] Engine Oil Quality API vs. ACEA

Engine Oil Quality – Quick Reference for Customers1. API vs. ACEA: Correspondence & Where Each Standard AppliesAPI Grade (Diesel)Closest ACEA EquivalentMain Regions Using Each StandardAPI CF / CF‑4ACEA E2 / E3 (obsolete)North America (API primary); South America (API + local registration); Middle Ea Read More>
[Diesel water pump Q&A ] Aluminum Pump Vs. Cast Iron Pump

Aluminum pump body – lightweight, good for clean water, light debris, and weak corrosive liquids. Ideal for portable use (e.g., flood relief, irrigation).Cast iron pump body – robust, handles dirty water, sand, oil, seawater, and industrial fluids. Suitable for stationary or heavy-duty applications. Read More>
[Diesel generator Q&A ] Checklist for Using A New Diesel-powered Product for The First Time

Pre-Operation & Inspection:1. Read Manual: Thoroughly read and understand the operator's manual.2. Visual Inspection: Check for any shipping damage, loose parts, or fluid leaks.3. Fluid Levels: Add and Confirm all fluids are at the correct level (engine oil, coolant if liquid-cooled, fuel).4. Batter Read More>
[Diesel water pump Q&A ] Reasons for Low/No Water Output From A Small Diesel Water Pump

Suction Side Issues:· Clogged Strainer or Foot Valve: The intake filter is blocked by debris.· Air Leaks: Cracks or loose connections in the suction hose pipe allowing air to enter.· Insufficient Water Source: Water level is too low, or the source is depleted.· Excessive Suction Head: The pump is pl Read More>
[Diesel generator Q&A ] Reasons for Overvoltage Or Undervoltage in AC Diesel Generator

For Undervoltage:1. Low Engine Speed (RPM): The most common cause. Engine not running at rated speed.2. Faulty AVR (Automatic Voltage Regulator): AVR is failing to supply sufficient excitation current.3. Overloading: Connected load exceeds the generator's capacity.4. Poor Connections: Loose or corro Read More>
[Diesel generator Q&A ] Diesel Generator Stalling After Starting? Check Oil

I. Problem Overview- The diesel generator starts but then stalls.II. Key Component- Solenoid Valve: Located on the oil pump, it is the actuating mechanism for the engine oil protection device.III. Function of the Solenoid Valve- After starting, it automatically cuts off the fuel pump's function to p Read More>
[Diesel generator Q&A ] Excitation Generator Vs. Inverter Generator, Pros & Cons

Principle Difference· Excitation Generator: The rotor creates its magnetic field using an external electrical current (excitation). An Automatic Voltage Regulator (AVR) supplies and controls this current to maintain a stable output voltage.· PM Inverter Generator: The rotor uses powerful permanent m Read More>
[Diesel engine Q&A ] Abnormal Smoke Color (Black, White, Blue) of Small Diesel Engines: Causes And Solutions

1. Black Smoke· Problem: Incomplete combustion. Too much fuel for the available air.· Common Causes: · Air Restriction: Dirty air filter. · Fuel System: Faulty injectors (dripping) or incorrect injection timing. · Turbocharger Issue (if equipped): Not providing enough boost.· Solutions: · Check Read More>
[Diesel engine Q&A ] Diesel Engine Insufficient Power: Symptoms, Reasons And Solutions

Symptoms of Low Power· Lack of acceleration and poor uphill performance.· Inability to reach maximum rated RPM.· Excessive black or white smoke from the exhaust.· High fuel consumption for the work performed.· Engine stalls under load.Common Causes & Troubleshooting1. Air Intake Restriction· Cause: Read More>