Start with the simple stuff
Most no-start generators aren't broken in any dramatic way. Before anything else, walk through the basics:
- Is there fuel in the tank, and is it fresh (ideally less than a month or two old, or treated with stabilizer)?
- Is the fuel shutoff valve open?
- Is the engine switch in the ON or RUN position?
- Is the choke set correctly for a cold start?
- Is the oil level correct? Many generators have a low-oil shutoff that prevents starting.
- Is anything plugged into the outlets? Unplug all loads before starting.
Stale fuel is the number one culprit
Gasoline starts breaking down within weeks, and ethanol-blended fuel absorbs moisture. When a generator sits with gas in the carburetor, the fuel can evaporate and leave varnish that blocks tiny passages. The engine may crank without ever firing, or start only to stall.
If your generator sat for a season with fuel in it, there's a good chance this is part of the problem.
Spark and air
A fouled or worn spark plug can keep an engine from firing. A clogged air filter — common in our dusty southern New Mexico conditions — can choke the engine. Both are routine maintenance items.
When to stop and call
If you've checked the basics and it still won't go, stop pulling. Repeatedly cranking with bad fuel wears you out and can flood the engine. Note what happens when you try (no sound, clicking, sputters, starts then dies) and take a photo of the model tag. That information makes troubleshooting much faster.
Safety reminder
Never run a generator indoors, in a garage, or near open windows. Carbon monoxide is deadly and you can't smell it. Let the engine cool before refueling.