Engine Misfire Diagnostics
Gas Engine Repair — Cheyenne, WY
A misfire — the stumble, shake, or flashing check engine light that means a cylinder isn't pulling its weight — has three possible causes: spark, fuel, or mechanical. Throwing plugs and coils at it works just often enough to keep bad shops in business; the rest of the time you've paid for parts and still have the miss.
Trevor isolates the misfiring cylinder from the codes and live data, then tests to determine whether the cause is ignition (plugs, coils, wires), fuel (injector, delivery), or mechanical (compression, valvetrain) before recommending the repair. A flashing check engine light means raw fuel is reaching the catalytic converter — get it looked at promptly before a $200 fix becomes a $2,000 one.
What's Included
- Cylinder-specific misfire isolation
- Spark, fuel and compression testing
- Flashing check engine light triage
- Quality plugs, coils and injectors when confirmed
- Repair verified — no 'drive it and see'
Straightforward Gas Engine Work
- Listen first
You know your vehicle. The diagnosis starts with what you've noticed — sounds, smells, when it happens.
- Diagnose by procedure
Verify the complaint, inspect the vehicle, scan for codes, test to confirm the failing part.
- Quote before work
You get the findings and the price before the repair starts. No surprise line items.
- Fix what's broken
Repairs use quality parts, and what doesn't need fixing doesn't get 'recommended.'
Related Gas Engine Repair Services
Frequently Asked Questions
How much does misfire diagnostics cost at TDC Automotive?
Labor is billed hourly at $125/hr for gas vehicles and $135/hr for diesel, and you'll get findings and an estimate before repair work begins. Call (307) 996-0980 with your year, make and model and Trevor can give you a realistic idea of what's involved.
Do I need an appointment for misfire diagnostics?
Call ahead at (307) 996-0980 — as an owner-operated shop, TDC schedules work so your vehicle gets Trevor's full attention rather than sitting in a lot for a week.
Where is the shop, and what area do you serve?
The shop is at 8407 Aztec Drive in Cheyenne, Wyoming, and serves all of southeast Wyoming plus the Nebraska panhandle and Northern Colorado — customers regularly drive in from Laramie, Wheatland, Torrington, Pine Bluffs, Wellington, Fort Collins and Greeley.