Gauges alone can’t diagnose modern A/C. Here is a step-by-step flow for R-1234yf, hybrid and EV systems: identify refrigerant, check vacuum decay, find leaks with forming gas, read scan data, and choose the right Konfort machine.
Cold mornings stop more diesels with gelled fuel and iced filters than with dead batteries. A pre-freeze checklist for diesel fuel, water separators, DEF and a pre-winter scan, built on fuel chemist and OEM guidance.
EPA’s Texas diesel fuel waiver allows 500 ppm sulfur diesel through October 24 for pre-2007 trucks and Tier 1 to 3 equipment only. Here is how fleets on Texas lanes can protect DPF and SCR systems.
The EPA 2027 NOx limit starts Jan 1, but the warranty, useful life, and DEF derate changes EPA proposed in July aren’t final. Here’s what fleets and diesel shops need to know.
The October 5 executive order waives federal dyed-fuel penalties for highway use through December 31, 2026 and defers the federal diesel excise tax. What fleets need to know about the deferral, state rules, and the catches.
If you’ve recently gotten an email suggesting you’re about to lose support—and that the “only” solution is switching diagnostic brands—take a...
When it comes to R-1234yf air-conditioning service machines, both TEXA Konfort 760 Touch and Robinair AC1234-9 Connected stand out as premium...
What if your team could trigger a forced DPF regen from 500 miles away, and get the truck back on route before lunch? Fleets and off-highway...
You know that smell. The one in a used work truck that smells like old coffee, cigarettes, and “something leaked in here six months ago.” Or the...
New Free Resource: Downloadable Wiring Diagrams Now Available on DefyDiagnostics.com At Defy Diagnostics, we know how frustrating it can be when...