Mobile Diesel Repair · 13+ Metro Markets
If your diesel don't run, call Big John.
JRUSH Diesel Services gives owner-operators and fleets an alternative to the traditional repair shop — mobile ECM tuning, diagnostics, and repairs that come to you, wherever the truck sits.
Why Owner-Operators Call JRUSH
The shop comes to you — not the other way around.
24/7 Mobile Dispatch
No towing, no waiting in a shop lot. We come to your truck, wherever it's parked.
Advanced Diagnostics
Advance-level engine tuning and diagnostics across nine major diesel platforms.
Straight From Big John
A real technician's face and reputation behind every repair — not a call center.
What We Fix
ECM tuning, diagnostics, and repairs — mobile.
Cummins, Detroit Diesel, CAT, MACK, Volvo, Isuzu, Paccar, International, and Hino — mechanical and electrical, diagnosed and repaired on site.
ECM Tuning & Diagnostics
Advance-level engine tuning and diagnostics to pinpoint the problem fast — not guess at it.
Mechanical & Electrical Repair
From wiring gremlins to major mechanical work, handled roadside or wherever your truck sits.
Pre-Purchase Inspections
Buying a used truck? Know exactly what you're getting before you sign anything.
Nationwide Network
Not just Houston. A network of 13+ metro markets.
JRUSH Diesel Services is a network of independent mobile diesel techs — Houston, Atlanta, Dallas, Memphis, Charlotte, Los Angeles, Miami, Tampa, Cleveland, and more.
Broke down? Big John's already on the way.
Call or text (713) 614-8859 — 24/7 mobile diesel repair, no shop required.