Generac GP2200i Problems – And How To Avoid Them

This is a compact yet very powerful generator that provides emergency power when you need it most. However, like most man-made machines, the Generac GP2200i can experience problems that prevent it from operating properly or at all. Today we’ll be looking at some of the most common problems users encounter with their Generac GP2200i and how to effectively troubleshoot them. Let’s find out more.

Table of Contents

What Is The Generac GP2200i?

The Generac GP2200i is a compact and portable but equally powerful 2200 watt inverter generator. It produces clean power for sensitive electronics and is 50 state compliant so you can use it anywhere and everywhere as long as you’re powering the recommended types of appliances.

Generac GP2200i Problems

1. Carburetor Issues

Carburetor issues with the Generac GP2200i can make using the portable generator a real headache. Issues with the carburetor are usually due to;

  • Closed fuel valve
  • Closed choke
  • Damaged carburetor bowl
  • A faulty carburetor float

Troubleshooting The Carburetor Issues

  • Make sure the fuel valve is turned to the “on” position and the choke is opened when starting the engine.
  • Once you start the generator the choke can be gradually closed as the engine warms up. Failure to properly start the engine can lead to flooding where too much fuel enters the carburetor. This results in leaks from the air filter and difficulty starting.
  • Regularly inspect the carburetor bowl for cracks to prevent fuel dripping so you need to replace the entire carburetor if cracks are detected.
  • Gently shake the carburetor to determine if the float is stuck and replace the float if faulty.

2. Overheating And Temperature Problems

Overheating can cause significant damage to your Generac GP2200i generator. There are a few common reasons why overheating may occur like;

  • Insufficient oil
  • Blocked air vents
  • Excessive load

Troubleshooting The Overheating And Temperature Problems

  • Check your generator’s oil level regularly and refill as needed. The oil acts as a coolant for the engine and low oil will reduce its ability to prevent overheating.
  • Make sure the air intake and exhaust vents on your generator are clear of any debris that could block airflow.
  • Do not exceed the wattage rating of your generator because running appliances and equipment that draw more power than the generator can handle will cause it to overheat from the strain.

3. Startup And Running Problems

If your Generac GP2200i generator won’t start up or is acting up while running, a few common issues could be the culprit like;

  • Old/ contaminated oil
  • Clogged air filter
  • Loose or corroded wire connections

Troubleshooting Startup And Running Problems

  • You should drain the fuel tank and carburetor bowl then refill with new and high-quality fuel. This should clear out any debris and get your generator starting again.
  • Remove the air filter element and either clean or replace it because a dirty filter also reduces engine performance and efficiency.
  • You need to tighten or clean all exposed connections especially the battery terminals. Corroded connections may need replacement.

4. Excessive Noise Or Vibration

Excessive noise or vibration is one of the top problems reported by Generac GP2200i owners. There are a few potential causes for this issue like;

  • A faulty muffler
  • Loose Components
  • Faulty engine components

Troubleshooting The Excessive Noise Or Vibration Problem

  • The muffler helps reduce engine noise by muffling the sound of the exhaust. Check the muffler for any cracks or corrosion and replace if necessary and make sure the muffler is properly secured to the exhaust outlet.
  • Vibration can occur if any components like the alternator, air filter, fuel pump or carburetor have become loose or detached so shut off the generator and inspect for any loose or unsecured parts and tighten or replace as needed.
  • Have a certified Generac technician test the generator to check for issues like a faulty piston, damaged cylinder head or problems with the crankshaft or camshaft.

5. Voltage Regulation Issues

If your Generac GP2200i generator is experiencing issues powering appliances or voltage regulation problems, the outlets or voltage regulator may have issues like;

  • Damage or corrosion
  • A faulty voltage regulator

Troubleshooting The Voltage Regulation Issues

  • Check that all outlets are clean and free of debris before operating the generator. If an outlet is not functioning then it will need replacement by an authorized Generac service dealer to maintain safety and warranty standards. Do not attempt outlet replacement yourself.
  • The voltage regulator controls and stabilizes the power output of the generator. If the voltage seems too high or too low when operating appliances, the voltage regulator may need adjustment or replacement. Fluctuating voltage can damage electronics and appliances, so do not operate the generator if voltage issues are suspected.

How To Prevent Generac GP2200i Problems

  • Run the generator in an open area away from air intakes because it emits exhaust fumes thag contain carbon monoxide, an odorless and deadly gas.
  • Check the oil level before each use and change the oil after the first 20 hours of operation and every 100 hours thereafter.
  • Replace the air filter every 3 months or 150 hours of operation, whichever comes first.
  • Run the generator for 30 minutes once a month with a 50-75% load to keep parts lubricated and prevent the carburetor from gumming up during storage.

How Long Can The Generac GP2200i Run Continuously?

The Generac GP2200i can run continuously for up to 10.75 hours at 25% load (550 watts) on a full tank of gasoline. At the maximum output of 2200 watts, it can run continuously for up to 7.5 hours. The actual runtime will depend on the load and surrounding temperature. It is recommended to not run the generator continuously for more than 8-12 hours to prevent overheating and allow it to cool down.

Can I Connect The Generac GP2200i To My Home’s Electrical System?

No, the Generac GP2200i is not designed to be connected to your home’s electrical system. It is a portable generator designed for temporary standby emergency backup power or recreational power needs. Connecting it to your home’s wiring can be extremely dangerous and in many areas is illegal.


The Generac GP2200i portable generator is an excellent choice for emergency backup power and recreational use. However, like any machine, it can experience problems  that require troubleshooting and professional repairs. By understanding the most common problems with the carburetor and all other issues, you will be well equipped to diagnose and fix any problems to get your Generac GP2200i generator back up and running. Just be sure to seek the help of a professional to prevent damaging the generator’s components any further.