What Is the Most Common Problem with Small Engines?

The most common issue with small engine carburetors is gumming from old gas. Cleaning the carburetor usually solves this.
Issues often relate to fuel systems and storage practices. To prevent problems, take key steps like using non-ethanol fuel and preparing equipment for seasonal storage.
Proper maintenance and fuel can prevent many small engine problems. But even well-cared-for equipment can fail. Understanding common issues helps address them quickly when they arise.
How can you troubleshoot starting issues? Check fuel levels, spark plugs, compression and more. Fouled plugs are a frequent cause of failure.

What safety gear should you use? Wear protective clothing and eye/ear protection. Keep guards in place and the area clear of people. Don’t touch moving parts.

How do you diagnose small engine problems? Determine why your small engine won’t start by checking your fuel levels, spark plug, carburetor, valve & compression levels and more.
What causes a small engine to lose compression? A loss of compression may result when the pistons are worn, the seals around your pistons are worn, or a push rod has become bent or broken.
How do I know if my small engine carburetor is bad? If you haven’t used your mower in a while, or the engine is cold, starter fluid can help get your mower started.

Engines start with a combustion or the controlled explosion inside the engine that makes it run.
If you’ve got a Duramax diesel, the Reduced Engine Power warning could Illuminate for a variety of reasons. There are many different technical service bulletins (TSBs) for Duramax-powered vehicles that mention Engine Reduced Power mode.