Manufacturer Repair | Ontario CA
Cummins Diesel Engine Repairin Ontario, CA.
At Rapid Diesel Repair, we offer comprehensive services for heavy-duty trucks, trailers, and RVs in Ontario, CA. From preventative maintenance to diagnostics, we keep your vehicles running efficiently. Call us to learn more about our expert solutions.
Truck owners trust Rapid
What’s included
What does it include?
When a Cummins-powered truck loses power, overheats, or develops an emissions warning, the repair starts with finding the cause. Rapid Diesel Repair in Ontario, CA provides Cummins diesel diagnostics, maintenance, and major engine repairs for work trucks and commercial fleets.
Engine, Turbocharger, and Fuel System Diagnostics
We investigate hard starts, rough running, low power, fault codes, and other performance problems. Depending on what the diagnosis shows, repairs may involve the turbocharger, injectors, fuel pump, cooling system, or engine lubrication system. We explain the findings before recommending parts or labor.
CALL RAPID DIESEL(909) 701 8755Talk with a diesel repair specialistEGR, DPF, and DEF System Repair
Emissions faults can lead to repeated regeneration problems or reduced power. Our technicians diagnose EGR and aftertreatment issues on equipped Cummins engines, including DPF and DEF system concerns.
CALL RAPID DIESEL(909) 701 8755Talk with a diesel repair specialistCummins Engine Maintenance and Overhauls
We provide preventative maintenance as well as extensive engine work, including in-frame overhauls when appropriate. We work with Cummins engine families such as the ISX15, B6.7, and X12, depending on the truck and repair required.
CALL RAPID DIESEL(909) 701 8755Talk with a diesel repair specialistIf your truck needs Cummins diesel repair near Ontario, call Rapid Diesel Repair at (909) 701-8755. Have the engine model and symptoms ready so we can discuss the next step.
Our process
A clearer path to a fix.
Scan & Analyze
We use advanced diagnostic tools to read codes, live data and system tests.
Find the Real Fault
We go beyond code definitions to identify the true root cause.
Explain & Recommend
We walk you through the issue and repair options before any work begins.
What makes us different
Diesel expertise. Real results.
Based in Ontario, CA, Rapid Diesel Repair is a full service diesel shop focused on accurate diagnostics and dependable repairs.
Experienced Technicians
Hands on experience with diesel trucks and fleet vehicles.
Advanced Diagnostics
We pinpoint problems accurately to minimize downtime.
Quality Parts
Durable components for long lasting repairs.
Clear Communication
We explain the repair and price before work begins.
FAQ
Frequently asked questions
We work with Cummins engine families such as the ISX15, B6.7, and X12, depending on the truck and the repair required. Have the engine model ready when you call so we can plan the service.
Yes, when the diagnosis shows an overhaul is appropriate. We inspect the engine, explain what we found, and go over the repair options before any major engine work begins.
Repeated regenerations and reduced power often point to EGR or aftertreatment faults, including DPF and DEF system concerns. We diagnose the emissions system to find the cause instead of guessing.
We work on light, medium and heavy duty diesel trucks, fleet vehicles, trailers and RVs, including Freightliner, International, Peterbilt, Kenworth, Volvo, Mack, Hino, Isuzu, Ford Power Stroke, Ram Cummins and GM Duramax.
It depends on the truck, the parts and what we find. We diagnose first, then explain the repair options and the price before any work begins, so there are no surprises. Call, text or use the form to get started.
Calling ahead is best so we can plan bay time and parts. If your truck is down, call (909) 701-8755 and we will tell you the fastest way to get it in.
Ready to get answers?
Let’s fix it right.
Accurate diagnostics. Honest answers. Get back on the road faster.