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When Your Generator Won't Start

Generator Repair Across Middle Tennessee

You flip to backup power during an outage and nothing happens. A standby unit that fails on the one night you need it is worse than no plan at all. Middle Tennessee Generator diagnoses and repairs every major brand, fast, so your home is covered before the next storm. We find the real fault, fix it right, and test it under load before we leave.

What We Fix

Generator Repairs We Handle

A standby system has several parts that can fail, and each one has its own fix. These are the repairs we handle most across Middle Tennessee.

Won't-Start and No-Power Faults

This is the call we get most after a storm. We trace it to the battery, fuel, controller, or transfer switch and correct the real cause. Either way, you leave with a unit that actually starts, not a temporary reset.

Battery and Charger Replacement

Batteries wear out on a predictable schedule, usually every few years. We replace them with the right group size and confirm the charger keeps them topped off. We also clean the terminals and check the connections that quietly drain a battery.

Transfer Switch Repair

The switch is what hands your home from the grid to the generator. When it sticks or fails, we repair or replace it so the handoff is automatic again. A failing switch is dangerous as well as inconvenient, so we never paper over it.

Engine and Fuel Repairs

Hard starts, rough running, and stalling under load point to fuel or engine issues. We service the carburetor, lines, and filters to get clean, steady power back. We tune the unit so it holds steady output even when the whole house comes on.

Why It Happens

Why Generators Fail When You Need Them

Most generator failures trace back to a few causes, and almost all of them are preventable. Knowing them helps you catch a problem before the next outage.

Dead or Weak Batteries

The battery does the starting, and it quietly loses capacity over time. A unit that sat all year can crank slowly or not at all when the grid drops.

Skipped Maintenance

Old oil, dirty filters, and stale fuel build up when a unit is never serviced. That neglect shows up as a no-start exactly when the storm hits.

Fuel Supply Problems

A closed valve, low propane, or low gas pressure starves the engine. The unit may start, then stall the moment it picks up the household load.

Our Process

How We Diagnose and Repair a Generator

A generator that will not start has a specific cause, not a mystery. Here is how we find it and fix it the first time.

  1. Full System Diagnostic

    We start at the controller and read the fault codes the unit has logged. From there we test the battery, fuel, and transfer switch in order, so nothing gets missed. A logged history usually points us to the failure before we lift a wrench.

  2. Battery and Charging Check

    A dead battery is the most common reason a standby unit fails to start. We load-test the battery and the charger, then replace what cannot hold a charge. A bad charger will kill a new battery too, so we test both together.

  3. Fuel and Gas Pressure Test

    Low gas pressure or a clogged line will stall a unit under load. We verify fuel delivery from the meter or tank all the way to the engine. A unit that starts and then quits almost always has a fuel problem.

  4. Controller and Transfer Switch Test

    We confirm the controller is sensing outages and signaling the transfer switch. A switch that will not engage leaves your home dark even when the engine runs. We test the handoff in both directions, grid to generator and back.

  5. Repair and Parts Replacement

    With the fault found, we make the repair with the right parts for your brand. We carry common wear items, so many repairs finish in a single visit. For anything we do not stock, we source the correct part rather than a generic substitute.

  6. Load Test and Sign-Off

    Finally we simulate an outage and run the unit under real load. You see it start, carry the house, and shut down clean before we close out. We do not call a repair done until it proves itself under that load.

Warning Signs

Signs Your Generator Needs Repair

A standby unit usually warns you before it fails outright. If you notice any of these, have it checked before the next storm season.

It Failed Its Last Self-Test

Standby units run a weekly self-test for a reason. A test that throws a fault or will not complete is the clearest warning you have. Ignoring a failed test is how homeowners end up dark during the next storm.

A Warning Light or Fault Code

An alarm light on the controller means the unit has logged a problem. Those codes point straight to the fault, and they do not clear themselves. We read the code, fix the cause, and clear it the right way.

It Starts, Then Quits Under Load

A unit that runs fine until the house draws power has a fuel or engine issue. That is a repair, not a quirk, and it will only worsen. Caught early, it is a simple fix; left alone, it can strand you.

It Is Slow to Start

A long, labored crank usually means a weak battery or a fuel problem. Catch it early and you avoid a no-start during the next outage. A few seconds of extra crank today is a no-start waiting to happen.

Why Homeowners Choose Us

Why Homeowners Call Middle Tennessee Generator

Any electrician can look at a generator. A few things make the repair actually hold.

We Repair Every Major Brand

We service Generac, Kohler, Cummins, Briggs and Stratton, and Champion units. You do not need the original installer to get a proper repair from us. We keep common parts on the truck, so many brands are fixed same visit.

We Find the Root Cause

A reset clears the light but not the problem. We trace the fault to its source, so the same failure does not return on the next storm. That saves you a second service call and a second outage failure.

We Test Under Real Load

A unit that idles in the driveway tells you nothing. We simulate an outage and confirm it carries your home before we sign off. Proof beats promises, especially on the system that protects your home.

One Team for Repair and Maintenance

We fix the unit and can keep it serviced going forward. That continuity means we already know your system the next time it needs attention. Staying on as your service team keeps small issues from becoming emergencies.

Service Area

Serving All of Middle Tennessee

We install and service generators across the entire Middle Tennessee region. Our coverage runs from the heart of Nashville to the surrounding suburbs and rural counties. Wherever you are, the same team handles the sizing, permits, and service.

Davidson CountyNashville, Antioch, Belle Meade, Goodlettsville
Williamson CountyFranklin, Brentwood, Nolensville, Fairview, Thompson's Station
Rutherford CountyMurfreesboro, Smyrna, La Vergne, Eagleville
Wilson CountyLebanon, Mt. Juliet, Watertown
Sumner CountyHendersonville, Gallatin, Portland, Westmoreland, White House
Robertson CountySpringfield, Greenbrier, Cross Plains
Cheatham CountyAshland City, Pleasant View
Montgomery CountyClarksville
Dickson CountyDickson, White Bluff
Maury CountyColumbia, Spring Hill, Mt. Pleasant
Coffee CountyManchester, Tullahoma
Bedford CountyShelbyville
Warren CountyMcMinnville
Putnam CountyCookeville

If your town is not listed, reach out anyway, because our crews cover communities across Middle Tennessee every day.

FAQ

Generator Repair FAQs

These are the questions Middle Tennessee homeowners ask most when a unit acts up. Here are straight answers before you call.

The usual causes are a weak battery, a fuel issue, or a controller fault. We run a full diagnostic to find the real reason instead of guessing.
Yes, we service Generac, Kohler, Cummins, Briggs and Stratton, and Champion. You do not need the company that installed it to get a quality repair.
We prioritize no-power calls, especially during storm season. We will give you a real window when you call, not a vague promise.
Often yes, if the engine is sound and parts are available. We will tell you honestly when a repair makes sense and when replacement is smarter.
It depends on the fault and the parts involved. We diagnose first and give you a firm price before any work begins, with no surprises.
Generator batteries wear out every few years and drain faster in heat. A failing charger can also kill a battery early, and we test for both.
Yes, if the switch will not engage, the engine can run while your home stays dark. We test the switch as part of every no-power diagnostic.
Regular maintenance is the answer, since most failures come from neglect. We offer service plans that keep the unit ready every storm season.
Yes, and most homeowners take one after a no-start scare. Keeping the unit serviced is the surest way to avoid a repeat failure.
A proper repair with the correct parts protects your coverage. We document the work so your warranty record stays clean.
Back on Backup Power

Get Your Generator Back in Service

A standby generator is only worth what it does during the next outage. Middle Tennessee Generator will diagnose the fault, give you a firm repair price, and test the unit under load before we leave. When your generator needs attention, request generator repair service and we will get you back on backup power.

Request Generator Repair(615) 555-0100