The Blog / Rapid Diesel Insights
The Rapid Diesel Blog
Explore diagnostics, preventative maintenance, fleet compliance, and repair decisions from our Ontario, CA team.
Diesel Repair Guides
Cummins X15, ISX and 6.7 engine repair in Ontario, CA. Learn warning signs, repair options and planned 2027 engine changes. Call Rapid Diesel at (909) 701 8755.
Read Article
Diesel Repair Guides
Compare DOT annual and 90 day BIT inspections in Ontario, CA. Learn truck safety checks, records and inspection preparation. Call Rapid Diesel: (909) 701 8755.
Read ArticleDiesel Repair Guides
EGR and DPF cleaning or replacement in Ontario, CA. Learn warning signs, soot causes and how diagnosis guides diesel emissions repairs. Call (909) 701 8755.
Read ArticleDiesel Repair Guides
Clean Truck Check quarterly testing starts October 2027 for covered OBD trucks. Plan fleet emissions service in Ontario, CA. Call Rapid Diesel: (909) 701 8755.
Read ArticleDiesel Repair Guides
Diesel pusher motorhome service in Ontario, CA. Review engine, Allison transmission, cooling and air brake checks before your next trip. Call (909) 701 8755.
Read ArticleDiesel Repair Guides
Truck AC and HVAC repair in Ontario, CA. Learn why cooling fails in Inland Empire heat, refrigerant precautions and service checks. Call (909) 701 8755.
Read Article
Diesel Repair Guides
Duramax Allison transmission repair in Ontario, CA. Learn about shudder, slipping, towing heat and repair or rebuild choices for GM trucks. Call (909) 701 8755.
Read ArticleServicio diésel
Mecánico diésel en Ontario, CA para pickups, camiones y RVs. Conozca reparación de motores, inspecciones DOT y BIT y cumplimiento CARB. Llame al (909) 701 8755.
Read ArticleEngines
The ISX and X15 explained by diesel techs: dual cam vs single cam, HPI vs XPI, every emissions era, what fails and which to buy. Ontario, CA shop inside.
Read ArticleFleet Guides
How long, tall, wide and heavy is a semi truck? Federal and California limits, 53 foot trailer rules and kingpin distance, explained by diesel techs.
Read ArticleElectrical and Diagnostics
W990 warning lights, no starts, or intermittent electrical faults? Learn seven repair mistakes to avoid and when to book diesel diagnostics in Ontario, CA.
Read ArticleSuspension and Steering
Truck leaning, bouncing, pulling, or wearing tires unevenly? Learn six suspension warning signs and schedule a heavy duty inspection in Ontario, CA.
Read ArticleFleet Compliance
Organize California Clean Truck Check deadlines, emissions repairs, testing records, and fleet maintenance. Get diesel diagnostics in Ontario, CA.
Read ArticleSuspension and Steering
Inspect truck shocks, leaf springs, bushings, air suspension, and mounting hardware before winter routes. Book suspension service in Ontario, CA.
Read ArticleElectrical and Diagnostics
Hard starts, warning lights, and intermittent diesel truck electrical faults? Learn how batteries, grounds, charging, wiring, and sensors are diagnosed.
Read ArticleHVAC and Cooling
Truck AC blowing warm air or cooling only on the highway? Learn common causes and book heavy duty cab AC diagnostics in Ontario, CA.
Read ArticleTransmission
Learn when heavy duty truck transmission fluid and filters need service, what warning signs matter, and how to prevent avoidable downtime in Ontario, CA.
Read ArticleTransmission
Hard shifts or delayed engagement in cold weather? Learn what may change during warm up and when a heavy duty transmission needs diagnosis.
Read ArticleRepair Process
Learn what happens during commercial diesel truck repair, from intake and testing to authorization, repair, verification, and fleet records.
Read ArticleMobile Repair
When should a fleet use mobile diesel repair, towing, or a shop bay? Compare safe on site work, diagnostics, tooling, and downtime in Ontario, CA.
Read ArticleMobile Repair
Truck down near Ontario, CA? Learn when a mobile diesel mechanic can help, when towing is safer, and what details to share before dispatch.
Read ArticleEmissions Repair
Understand DPF warning lights, failed regeneration, derate, diagnosis, cleaning, repairs, and legal emissions service for diesel trucks in Ontario, CA.
Read ArticleFleet Compliance
Plan Clean Truck Check deadlines, OBD testing, fees, failed test repairs, readiness, retesting, and DMV compliance for diesel trucks in Ontario, CA.
Read Article