Generators are indeed lifesavers, especially during power outages and outdoor events. However, they’re not perfect. Even the most reliable brands of generators can occasionally malfunction. That’s why having basic knowledge of common troubleshooting techniques can take you a long way.
If you know what common generator problems to expect and how to deal with them correctly, you can use your generator for a long time. That’s why in this DIY guide, we’ll list down all possible and common issues, how you can diagnose them, and discuss simple solutions to fix the problems.
Problem #1: Generator Won’t Start
If your generator fails to start even after many tries, here’s a DIY guide on what things you can do:
1. Check the fuel tank
This is the first place you should look at. Check if there’s no fuel or if there are low levels. Once you’ve confirmed that, add more fuel. Just make sure to not use old or “stale” fuel that is older than two months because this can damage your engine.
2. Check the switch
You still have to check the start switch. Set and switch it to the “ON” position. If it’s not starting with that, use a multimeter to test the switch for continuity or the electrical path. If the test shows a negative result even if the switch is on, replace the switch.
3. Check the valves
The fuel valve controls the flow of fuel from the tank to the carburetor. Make sure that it’s open so the fuel will be able to flow. If it’s open and the generator isn’t starting, the fuel line might be clogged so check for that. Get a bucket, unplug the hose, and check if the fuel can flow through the line to make sure there are no clogs.
4. Check the oil level
Use a dipstick to check if the oil level in the engine is on a level surface. Having the proper amount of clean oil influences the generator’s performance and service life. If the level isn’t enough, add more oil and make sure to use the type of oil recommended by the manufacturer.
5. Check the ignition coil
The ignition coil sends voltage to the generator’s spark plug when the engine starts running. If the generator isn’t starting, use a spark tester to check if the coil has failed. If it’s defective, replace it with a new one.
6. Check the choke valve switch
When starting a generator, the switch should be set to “CLOSED” and will only be switched to “OPEN” once the engine has already warmed up for a while. Make sure that the switch isn’t “OPEN” before you start the engine. If it is and the generator won’t start, turn it into “CLOSED” and try starting the generator again.
Problem #2: Generator is Stalling
If your generator is working but starts sputtering or faltering during the operation, there can be a few different reasons:
1. Fouled spark plug
Fouled spark plugs can prevent natural gas generators from producing enough power to keep them running. If yours is already worn or cracked, make sure to change it. Moreover, keep in mind that you must change your spark plugs every 100 hours of use.
2. Clogged filters
Check if the generator’s filters are clean and working properly. A clogged air filter prevents the carburetor from getting the clean air needed for combustion. A clogged oil filter can cause a build-up of contaminants, which can wear down the engine. If these filters are dirty or worn out, clean or replace them so your generator can run smoothly again.
Problem #3: Battery Failure
This is one of the most common generator problems no matter what model the unit is. All batteries wear down with age, which results in them providing less and less power to the generator as time goes on. A typical generator battery can last around 4 years, give or take.
If your battery or generator is relatively new, then the failure may be a result of human error. Here are some possibilities and their quick fixes:
1. The electrical board was shut down intentionally
To fix this, just check your circuit breaker and see which slot was flipped off. Flip that back on and the generator should run again.
2. The battery has dirty connections
The terminals connecting the battery and the generator may be covered in dust and debris. This will surely prevent the battery from establishing a strong connection when starting the generator. To solve this, get a wire brush and scrub away any dust, rust, and debris that may have built up on the terminals.
3. The battery terminals are loose
If the terminals aren’t dirty, check if they are loose or not. If they are, you just simply have to tighten them back up and your generator should be running properly again.
Problem #4: Leakages
A generator can suffer from oil, coolant, or fuel leaks. Over time, if you’re overworking your generator or it isn’t getting enough use, leakages can start at different parts of the machine. If you want to avoid your generator’s total failure, you’d want to fix these leakages as soon as possible.
Inspect your coolant hoses and fuel lines or valves, regularly to avoid leaks. Make sure there’s no sign of damage so there won’t be any leakage that can damage the whole generator. If they’re damaged, make sure to replace them immediately.
Problem #5: Weather Damage or Pest Infestation
We mostly use generators when the weather is in its worst condition, like during a hurricane. Sometimes, although you use covers to protect your generator, excessive rain can cause water leaks. This can result in rust, corroding wires, and bad electrical connections within the generator.
If you notice or think that there’s a chance of weather damage, quickly dry the generator once turned off and cooled down. If the damages are already done, fix or replace the parts that are damaged already.
Aside from the extreme weather conditions, pests can also damage your generator. Insects and rodents can chew on wiring and leave fecal matter inside the generator. One way to solve this is by cleaning anything they left behind and replacing any chewed wires.
To avoid any of the two from happening again, make sure to properly cover and store your generator. Find the right protected location where it will be safe from these things.
Conclusion
Taking care and proper, regular maintenance are keys to minimizing or avoiding these common generator problems. If you ever encounter any of these issues, don’t worry since you can simply follow the DIY guide and fix them yourself. However, if you’re not confident enough or can’t figure out what’s wrong with your generator, it’s still best to consult a professional and bring the generator to them.
In case you need to replace your generator and buy a new one, you can check our wide variety of durable generators. With a durable generator and proper maintenance, you can always have a backup power source whenever you need it.