Engine running rough? Need a full rebuild? We handle everything from diagnostics to complete engine overhauls and conversions—keeping your rig reliable and road-ready in central Washington.

Engine Repair in Moses Lake, WA
At 509 Roadside, we provide complete diesel engine diagnostics, repairs, overhauls, and conversions for trucks, trailers, RVs, buses, and heavy equipment. Whether you’re chasing a check engine light or planning a full rebuild, we’ve got the tools and expertise.
Common engine services include:
- Semi truck engine repair
- Full engine overhauls and rebuilds
- Engine conversions and repowers
- Head gasket, injector, and turbo repairs
- Engine diagnostics and performance troubleshooting
What Makes Us Different
509 Roadside isn’t your average diesel shop. We’re equipped to service a wide variety of diesel-powered vehicles, and every engine repair or overhaul is done with precision to extend lifespan and reduce downtime.
- In-shop service for trucks, RVs, trailers, buses, and fleets
- Roadside assistance available during business hours
- Honest timelines and transparent estimates
Need us on the road? Our mobile service team can assist during weekdays for breakdowns and scheduled on-site repairs. If you’re stuck and need help, 509 Roadside has you covered with 24/7 roadside assistance.
FAQs
How Do I Know If My Diesel Engine Needs an Overhaul?
If you’re experiencing excessive oil consumption, loss of power, hard starts, or blue smoke from the exhaust, it may be time for an engine overhaul. Proper diagnostics can confirm the condition.
How Can I Get in Touch?
Call 509-855-4932 to book your engine inspection or repair. We’ll help you decide whether repair, overhaul, or conversion is the best path forward for your truck or equipment.
What’s the Difference Between Engine Repair and Conversion?
Engine repair restores or replaces failing parts; a conversion involves swapping your engine for a new or different one—often for power, emissions, or reliability upgrades. Both depend on your goals and truck specs.
What Areas Do You Serve For Engine Repair?
We’re located at 11969 Debonair Street Northeast, Moses Lake, WA. We also proudly serve Spokane, WA; Kennewick, WA; Pasco, WA; Richland, WA; Yakima, WA; Wenatchee, WA; and Ellensburg, WA.
Schedule Your Engine Repair Now: Call 509-855-4932!
Whether it’s a simple repair or a full overhaul, call 509-855-4932 to schedule your engine service. We’ll get your engine running smooth, strong, and ready for the miles ahead.
What They're
Saying About Us
See why our customers consider 509 Roadside their go-to repair shop in Moses Lake, WA and the surrounding areas!
I can’t speak highly enough of the service I received from 509 Roadside. My F150 was throwing multiple error codes and knocking, and eventually stranded me off I90 on a Sunday afternoon. Joseph with 509 was extremely patient and attentive, and helped walk me through problem solving over the phone, and I was able to get back on the road. (For a bit, but that’s the truck’s fault and not theirs!) Five stars, and I’d give more if I could.
Joseph did a great job replacing a small engine for us. He searched, bought and replaced it for us while keeping us informed every step of the way. With great pricing and service, we will continue to utilize him in the future for our needs.
They did excellent work on getting my 1995 Tacoma running with multiple vacuum and other issues. Good diagnosis and repair on old projects is hard to find now days. I would recommend these folks to anyone.
Joseph and the 509 Roadside crew have been an invaluable part of keeping our fleet of delivery trucks running reliably here at Culligan, and it has been great having such a fantastic, local mechanic. He is consistent, thorough and always goes the extra mile to ensure our vehicles are in excellent condition. His attention to detail and commitment to quality work are evident in every job he takes on. Knowing we can count on him for fast, dependable service makes all the difference in keeping our operations on schedule. Very highly recommended for all your fleet needs!
509 Roadside put in a left foot pedal, brand new brakes, and rotors and rear drums on my car. Also checked all fluids and cleaned engine bay. They were fast, friendly, and went way above and beyond for me. I would give these guys 20 stars if I could!
509 Roadside is amazing. I was driving my truck and was in the area with an airbag broken on my trailer. I called 7 different shops within 100 miles of Moses lake around 1pm on a Thursday 3/13/25 and 509 was the only one to answer. Not only did they answer but they took the time to find the correct airbag and get me safely back on the road at a very reasonable price! It was a great experience and I will definitely be using their services again if I’m ever in need.
I am a hostler driver in our yard and anytime I need repairs, I call on 509 roadside, they haven't disappointed me at all. Very professional and courteous, I strongly recommend them.
Had issue with semi shutting down due to coolant level issue, contacted 509 to assist and they were earlier then expected, very friendly and got me back on the road quickly and went beyond duty and even checked other things to prevent any other issues. Would call them first if I ever have a problem down road.
Contact 509 Roadside
Need roadside assistance, have questions, or want to schedule your truck or trailer in for a service or repair? Get in touch!