What to Do If Your Generator Won’t Start After a Storm in St. Louis

If your generator won’t start after a storm, first make sure you’re safe, then check the fuel supply, battery connections, oil level, air filter, spark plug, and circuit breakers. Follow the proper start procedure in the owner’s manual. If it still won’t run, call a trained technician like Hoffman Brothers, serving St. Louis and Nashville, to inspect and repair it safely.

 

Safety First

 

Before you touch anything, make sure the area is safe:

• Move the generator to a dry, well-ventilated spot.
• Wear gloves and eye protection to avoid burns or sparks.
• Let the unit cool down if it’s hot from previous attempts.
• Keep children and pets away during the whole process.

 

Check the Fuel Supply

 

Without fresh fuel, your generator can’t start:

• Open the fuel valve and ensure the tank has enough gasoline or propane.
• If gas smells old or looks dark, drain it and refill with fresh fuel.
• For propane units, check the tank valve is open and the hose is intact.
• Look for leaks or cracks in hoses and replace them if needed.

 

Inspect the Battery and Connections

 

A weak or disconnected battery often stops an electric-start generator:

• Make sure the battery positive (+) and negative (–) cables are tight and free of corrosion.
• Clean any white or green build-up with a wire brush and baking soda solution.
• Test the battery voltage with a multimeter; it should read around 12.6 volts when fully charged.
• If the voltage is low, charge the battery or replace it if it won’t hold a charge.

 

Verify Oil and Coolant Levels

 

Many generators have a low-oil sensor that prevents starting:

• Locate the oil fill cap and dipstick; remove, wipe, then reinsert and withdraw to read the level.
• Add the recommended oil type until it reaches the “full” mark.
• For liquid-cooled models, check the coolant reservoir and top up with the correct mixture.
• Never run the generator if it’s low on oil or coolant—this can cause serious engine damage.

 

Clean or Replace the Air Filter and Spark Plug

 

Blocked air flow or a fouled spark plug will prevent ignition:

• Remove the air filter cover, take out the filter, and inspect it for dirt and damage.
• Clean a foam filter with soapy water, let it dry, and oil it lightly. Replace paper filters if clogged.
• Unscrew the spark plug, check its tip for carbon build-up or wear, and clean with a wire brush.
• Check the plug gap with a feeler gauge; adjust or install a new spark plug if out of spec.

 

Reset Circuit Breakers and GFCI Outlets

 

Strokes of lightning or power surges can trip internal safety devices:

• Locate the generator’s built-in circuit breakers or GFCI outlets.
• Flip any tripped breakers fully off, then back on to reset them.
• If the GFCI outlet has a “reset” button, press it firmly until you hear a click.

 

Follow the Proper Start Procedure

 

Every model has a specific sequence—read and follow your owner’s manual:

• Turn the fuel valve on and set the choke to “start” (for cold engines).
• Switch the engine on or push the electric-start button.
• If it sputters, move the choke gradually toward “run” as it warms up.
• Avoid cranking longer than 10 seconds; wait one minute between attempts to protect the starter.

 

When to Call a Professional

 

If you’ve tried all steps and the generator still won’t fire up, it’s time to get expert help. Internal engine issues, carburetor problems, or complex electrical faults need a trained technician. Contact a reliable, full-service company for residential and commercial generator service in St. Louis and Nashville. They can perform advanced diagnostics, replace worn parts, and ensure your generator runs safely when it matters most.