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!
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.
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.
Our resident transport bus broke down on the way back from Wenatchee. 509 Roadside made arrangements to get the vehicle towed to the shop and had it fixed the very next day. Great service!
Totally helped me out of a jam. Last Wednesday 2/26/25 late in the day, my 2011 Isuzu Blue Bumper Box truck had a red check engine light go off. You guys were my angels. Thanks so much for clearing the code and getting my truck back on the road. It made it all the way to Spokane and back to Seattle.
509 Roadside saved my day. I locked my keys in my trunk and called insurance to have them help connect me with someone to get into my car. I was waiting for the maintenance truck to come, 2.5 hours after my call. 509 Roadside was just driving by and helped. Super nice guy!
I started using 509 Roadside in 2023 and I can’t say enough good things about Joe and his team. They provide prompt and professional repair services for my equipment at very reasonable rates. Since my office is based outside of the region where 509 Roadside is located, they are a strategic resource for my equipment service needs.
My window wasn’t working for the past 2 years and I was looking for a good mechanic for a while but they were too pricey. But 509 roadside did not disappoint! They were able to fix my window at a great price! Definitely recommend!! I can finally go through the drive through!
These guys got me in to their shop on short notice and found my electrical problem quickly. Can’t thank them enough! I will call them again if I need help in the area!!
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!