Your Generator Deserves More Than Just Another Repair Shop
You flip the switch, the power’s out, and nothing happens. Or maybe it fires up, coughs, and dies twenty seconds later. When you count on a generator to keep a job site running, a shop lit, or your family warm during a Colorado outage, a dead unit isn’t an inconvenience — it’s lost money and lost peace of mind. You already know that low-grade worry when the diesel starts hunting or the standby unit won’t hold a load. You’ve probably been quoted a number that made no sense and been left waiting for a callback that never came.
Note: Large vehicles like this are serviced at our Greeley and Fort Morgan locations. Our Brighton shop handles cars and light trucks.
At Bullet Automotive & Diesel, 624 13th St., Greeley, CO 80631 | 100 Walnut St., Fort Morgan, CO 80701, we treat generators the same way we treat every diesel and gas engine that rolls into our bays — with honest diagnostics and repairs that actually hold. Our ASE Certified Technicians work on portable jobsite units, standby home systems, towable light towers, and PTO-driven equipment. We shoot straight, tell you what’s wrong in plain English, and get you back to reliable power.
Why Generator Owners in Greeley and Fort Morgan Choose Bullet Automotive & Diesel
We Speak Your Language, Not Mechanic Jargon
You know your way around an engine. You don’t need someone talking down to you or burying the real problem under shop-talk. When your generator comes in, we walk you through exactly what we found and what it means for your uptime.
- A plain-English explanation of what failed and why
- Photos or a walkthrough of the actual worn or damaged parts
- Clear priority tiers so you know what’s a must-fix now and what can wait
- Honest turnaround estimates so you can plan around the downtime
No pressure, no confusion. Just the facts you need to make a smart call on your equipment.
Generator Expertise Without Dealership Pricing
Dealers and OEM service centers can leave you waiting weeks and charge like your wallet has no bottom. Our True Diesel Experience means we understand the engines behind most generator sets — Kohler, Cummins, Kubota, and the gas Honda and Briggs powerplants — without the sticker shock.
- Diesel and gas generator engine diagnostics under one roof
- Load testing and voltage regulation troubleshooting
- Fuel system, injector, and carburetor service
- Comprehensive Multi-Point Vehicle Inspections applied to your equipment
You get the same technical depth you’d expect from a factory center, paired with fair pricing and people who remember your name.
Transparency That Rebuilds Trust
If you’ve been burned by a shop that found ten problems when you came in for one, you’re not alone. We do it differently. Every recommendation comes with a written estimate and an honest ranking of what matters most.
- Written estimates before any work begins
- No surprise line items added to the final bill
- Repairs backed by our 12 month or 12,000 Mile Warranty where applicable
- Zero upsell pressure — we fix what needs fixing
With Over 800 5-Star Reviews across our Convenient Locations, our reputation is built on doing exactly what we say we’ll do.
Comprehensive Generator Repair Services
Generator Maintenance Services
- Oil and filter changes for gas and diesel gensets
- Air, fuel, and coolant filter replacement
- Battery testing and replacement for starting systems
- Coolant system flush and inspection
- Belt and hose inspection and replacement
- Fuel stabilization and tank service for stored units
Regular scheduled maintenance is what keeps a standby or jobsite generator ready when you actually need it. Colorado’s temperature swings — from below freezing to over 105 degrees — are brutal on fuel, batteries, and cooling systems, so a consistent service schedule prevents the failures that always seem to hit at the worst moment.
Generator Diagnostic and Repair Services
- No-start and hard-start diagnostics
- Fuel system and injector repair
- Voltage regulator and alternator troubleshooting
- Overheating and cooling system repair
- Governor and RPM stability correction
- Automatic transfer switch inspection
When a unit won’t hold a load or the engine hunts and surges, our diagnostic technicians track the fault to its root instead of throwing parts at it. That same discipline covers electrical repair for charging faults, wiring issues, and control panel gremlins that leave you guessing.
Generator Specialty Services
- Diesel injector cleaning and replacement
- Turbocharged genset engine service
- Load bank testing to verify output under demand
- Fleet and multi-unit maintenance programs
For diesel-powered generators, our diesel repair specialists bring the same expertise we apply to work trucks — fuel systems, cooling, and injectors that keep the engine reliable under long run hours.
Model-Specific Generator Expertise
Honda Generator Service and Repair
Honda’s portable and inverter generators are the gold standard on jobsites and at campsites. Common issues include stale-fuel carburetor gumming, pull-start wear, and inverter faults from overloading. We clean and rebuild carburetors, service the ignition and charging systems, and get your quiet, dependable Honda running clean again.
Generac Generator Service and Repair
Generac dominates the home standby market, and those units log serious hours during Colorado outages. Frequent concerns are battery failures, oil pressure sensor faults, and transfer switch problems. We test the automatic transfer switch, verify the engine holds load, and service the maintenance items that keep your standby ready to protect your home.
Cummins Generator Service and Repair
Cummins-powered gensets are built for heavy, continuous duty on commercial and agricultural sites. Their diesel engines demand proper fuel filtration and cooling care. We handle injector service, fuel system repair, coolant maintenance, and the load testing that confirms your Cummins unit will carry the full demand when it counts.
Kohler Generator Service and Repair
Kohler builds both residential standby systems and rugged industrial gensets. Owners often see voltage regulation drift, controller faults, and cooling issues in extended run cycles. Our technicians diagnose the regulator and control panel, service the engine, and restore steady, clean power output to your Kohler unit.
Kubota Generator Service and Repair
Kubota diesel engines power a huge share of towable light towers and compact gensets across construction sites. Glow plug wear, fuel filter clogging, and cold-start struggles are the usual culprits in Colorado winters. We service glow plugs, replace fuel filters, and tune the cold-start systems so your Kubota fires up in freezing temps.
Common Issues Across Generator Models
No matter the brand, generators tend to fail in predictable ways — and most of those failures trace back to fuel, batteries, or neglected maintenance. Here’s what we see most often and how we address it.
- Stale fuel and carburetor gumming: Fuel left sitting turns to varnish and clogs jets. We clean or rebuild the carburetor and get your unit running smooth again.
- Dead or weak batteries: Colorado cold kills starting batteries fast. We test and replace batteries so your standby unit actually cranks when the power drops.
- Won’t hold a load: A generator that runs but sags under demand usually has a voltage regulator or fuel delivery problem. We load test and correct the root cause.
- Overheating during long runs: Clogged radiators and low coolant cause shutdowns. We flush the cooling system and repair leaks so extended run hours don’t cook the engine.
- Engine surging or hunting: Unstable RPM points to governor or fuel issues. We diagnose the governor and fuel system to restore steady output.
- Transfer switch failures: A standby unit that won’t kick in on an outage often has a bad automatic transfer switch. We inspect and repair the switch so the handoff happens automatically.
The Bullet Automotive & Diesel Difference for Generator Owners
When your power source goes down, you don’t have time for guesswork or games. Here’s what you get every time you bring a generator to us.
- Respects your time with efficient diagnostics and honest turnaround estimates
- Respects your budget with written estimates and priority tiers, never surprise line items
- Respects your knowledge by explaining the real problem in plain English
- Stands behind the work with ASE Certified Technicians and our warranty
What starts as one generator repair usually turns into a long-term relationship. Once you’ve got a shop that shoots straight, you stop second-guessing every noise and every bill — and that’s the whole point.
Service Areas We Serve
From our Greeley and Fort Morgan shops, we handle generator repair and maintenance for owners and businesses across the Front Range and eastern plains.
- Commerce City — trusted equipment service just south of our shop
- Henderson — dependable generator care for local crews
- Thornton — standby and portable unit service nearby
- Lochbuie — reliable power repair for the community
- Evans — genset and diesel service for the northern corridor
- Hudson — jobsite generator support out east
Schedule Your Generator Service Today
Don’t wait until the next outage or the next job to find out your generator won’t run. Bring it to a shop that treats your equipment — and your time — with respect. Our ASE Certified Technicians will diagnose it straight, tell you exactly what it needs, and get you back to reliable power.
Bullet Automotive & Diesel
Greeley: 624 13th St., Greeley, CO 80631 · 970-415-8018
Fort Morgan: 100 Walnut St., Fort Morgan, CO 80701 · 970-867-2519
See what your neighbors are saying on our Greeley reviews page, then give us a call. We always shoot straight. Call Bullet Automotive & Diesel today at 970-415-8018.