Auto Repair Shop and Diesel Engine Repair Services in Snohomish, WA

Looking for an auto repair shop in Snohomish, WA that can handle a diesel truck and your daily driver? FS Autoworx covers both. We deliver diesel engine repair services and full service auto repair to drivers throughout Snohomish and all of Snohomish County. We have been a licensed shop since September 2020, and our team brings 75+ years of combined hands-on experience to every job. Find us on Google Maps and see why drivers from Snohomish, Lake Stevens, Everett, and beyond make the trip to our shop on State Route 2. Contact us today.

Complete Diesel Engine Repair Services in Snohomish, WA

We work on Powerstroke, Cummins, and Duramax platforms and carry diesel-specific scan tools, so you are not paying for guesswork. For deeper engine work — rebuilds, internal repairs, and machine work — see our engine repair page.

Our complete diesel engine repair services include:

  • Diesel engine diagnostics using advanced scan tools specific to diesel fault codes.
  • Fuel system service: injectors, lift pumps, CP3 and CP4 high-pressure fuel pumps, and fuel filters.
  • Turbocharger inspection, rebuild, and replacement, including variable-geometry units.
  • EGR cleaning, repair, and replacement on Powerstroke, Cummins, and Duramax engines.
  • DPF service and regeneration to restore performance and fuel economy.
  • Glow plug replacement and cold-start system repair.
  • Complete engine overhauls when the damage goes deeper than a single component.

Every job comes with a written estimate before we turn a wrench—no surprises on the bill.

Mechanic using a wrench on a car engine under the hood, representing auto repair shop and diesel engine repair services

Diesel Engine Gaskets Repairs and Why They Matter

A blown or leaking gasket is one of the most common reasons a diesel engine overheats, burns coolant, or loses compression. Our diesel engine gaskets repairs cover head, valve cover, intake manifold, and exhaust manifold gaskets across all diesel platforms. We pressure-test and resurface cylinder heads where needed, so the repair holds the first time.

Full Service Auto Repair for All Makes and Models

Diesel is our specialty, but we are also a full service auto repair shop for gas-powered domestic, import, and European vehicles. Drivers looking for a dependable European car repair shop near Snohomish will find that our certified technicians handle BMWs, Volkswagens, and other European makes with the same precision we apply to diesel trucks. Our auto repair shop services gas vehicles for brakes, suspension, electrical diagnostics, cooling systems, oil changes, and engine rebuilds. One shop, one team, and all work fully warranted.



For engine rebuilds, internal repairs, and diagnostics on a failing engine, start with our engine repair page.

Mechanic wearing gray gloves repairs a car engine under the hood in a garage

Routine Auto Maintenance in Snohomish, WA

Oil changes, filters, fluid services, belts, and factory-interval inspections keep repair bills small. Our auto maintenance services cover scheduled maintenance for diesel trucks and gas vehicles alike, and most maintenance appointments are same-day. Staying on the interval is the cheapest diesel repair you will ever pay for.

For a complete look at everything we service, visit our services page.

Why Snohomish County Drivers Choose FS Autoworx

We are a family-owned-and-operated auto repair shop with certified technicians who have nearly 20 years of professional automotive industry experience. Upfront pricing means you know the cost before we start. Military and senior discounts are available. Most diagnostic appointments are same-day. Repair timelines depend on parts availability, and we communicate the schedule before the work begins. Drivers from Snohomish, Sultan, Duvall, and as far as Seattle trust us for diesel engine repair services and everyday auto repair because we get it right the first time and warranty everything we touch.

Frequently Asked Questions About Auto and Diesel Engine Repair in Snohomish, WA

  • How Do I Know If My Diesel Engine Needs a Repair?

    Common signs include loss of power under load, excessive black or white exhaust smoke, hard cold starts, rough idle, and persistent fault codes. If any of these show up, bring the truck in before the issue compounds into a more expensive repair.

  • Do You Work on European Diesel Vehicles?

    Yes. Our auto repair shop services European diesel vehicles, including Volkswagen TDI, BMW diesel, and Mercedes diesel platforms. We use diesel-specific diagnostic tools that read European OBD protocols accurately.

  • Do You Service Gas Vehicles or Only Diesel?

    We service both. FS Autoworx is a full service auto repair shop for gas-powered domestic, import, and European vehicles as well as diesel trucks — brakes, maintenance, electrical diagnostics, and engine work all run through the same shop.

  • Does FS Autoworx Provide Written Estimates Before Starting Work?

    Yes. Every job at our auto repair shop starts with a written estimate and timeline. Nothing gets started until you approve it. No hidden fees, no surprises.

Book Diesel Engine Repair or Auto Service in Snohomish, WA

Whether it is a diesel truck losing power or a family car due for brakes and an oil change, one shop handles it. Call FS Autoworx at (360) 548-3491 to schedule a same-day diagnostic or book your appointment online. We are located at 18970 State Route 2, Monroe, WA 98272, and serve drivers throughout Snohomish, Lake Stevens, Everett, Sultan, and the rest of Snohomish County. Open Monday through Thursday, 8:00 AM to 6:00 PM, and Friday, 8:00 AM to 12:30 PM.