Diesel generator engine failure points — the basics
A modern diesel generator engine block itself rarely fails in service-life terms — properly maintained Yanmar, Perkins, and Cummins blocks easily exceed 30,000 hours. The components that DO fail are the smaller, lower-cost peripherals — sensors, controllers, regulators. Knowing them helps you diagnose problems early and stock the right spares.
Controllers (e.g. DSE)
AVR — Automatic Voltage Regulator
Governors / fuel-injection ECU
Engine sensors — temp, pressure, level
More from Generator School
kVA vs kW — explained (with a beer)
Understand the difference between kVA and kW the easiest possible way — with a pint of beer and its foam. The single most useful concept when sizing a generator.
How does a generator actually work?
The full chain — fuel to engine to alternator to electricity — explained without the marketing fluff. Once you understand this, every component on a spec sheet makes sense.
Diesel vs petrol — storage, life, safety
Above 8 kVA, diesel wins almost every battle. Below that, petrol is fine. Here's why — fuel stability, fire risk, service life, and the real-world differences.
Selecting a generator — what to account for
A simple 6-question framework that gets you to the right generator without overspending. Run, surge, fuel, duty, location, future-proofing.
What is a load bank — and why every standby unit needs one
A standby generator that has only ever run unloaded is a generator that may fail in an outage. Load-bank testing is the only way to prove it.
Importance of maintenance — monthly testing isn't optional
It's not about service life. It's about whether the unit starts on the day you actually need it. Monthly tests + scheduled servicing — what and why.

