The MX-13 in your T680 or 579 is a strong engine with a short list of very specific weaknesses. Knowing that list is the difference between a two-hour fix and a two-day guess.
Answering calls day & night across Miami-Dade and Broward. Se habla español.
Fewer Miami shops are genuinely comfortable with PACCAR MX power than with Detroit or Cummins, which is exactly why owner-operators end up towing T680s across the county looking for help. They should not have to. Power Diesel works the MX-13 and MX-11 regularly: EGR valve and cooler failures, the aftertreatment and DEF dosing side, injector and fuel-rail complaints, coolant loss that turns out to be internal, and the derates all of it triggers.
MX-13 and MX-11 are engines we work, not engines we look up when one shows up.
T680, T880, 579 and 389 — the truck around the engine matters too.
Instead of hunting for a shop that will take an MX, have us come to the truck.
The MX-13 calls that fill our week across Miami-Dade and Broward.
Repair detail is on PACCAR MX-13 engine repair in Miami, and the chassis side on Kenworth and Peterbilt repair.
Typical on-site arrival is 45–90 minutes in Miami-Dade and 60–120 minutes in Broward. Because MX parts are less commonly stocked, we confirm part availability with you on the same call instead of discovering it at the truck.
We will. Call and describe the code — we have probably seen it this month.
Power Diesel works MX-13 and MX-11 engines regularly, on-site, 24/7, across Miami-Dade and Broward — which is more than most mobile outfits in South Florida can say. Call (786) 395-7263.
That pattern on an MX-13 often points to the EGR cooler or an internal path rather than a hose. We pressure test and confirm the source before anything comes apart, because the repairs differ enormously in cost.
In most cases yes, once the cause is repaired. Derates on MX engines are typically EGR or aftertreatment driven, and we fix the fault rather than clearing the code and sending you off.
Yes. Both engines share the same design language and most of the same diagnostic approach.
Yes — brakes, air, suspension, electrical and fifth wheel on T680, T880, 579 and 389, alongside the engine work.