PACCAR Engine Repair in Montreal: MX-13, MX-11 and PX-9
PACCAR engines power late-model Kenworths and Peterbilts. We diagnose and repair them at our Saint-Laurent shop.
PACCAR engines we repair
Current or recent engines
- MX-13
- MX-11
Older engines still on the road
- First-generation MX-13 (around 2010-2016)
- PX-9 (straight and vocational trucks)
The PX-9 is a mid-range engine built by Cummins for PACCAR, mostly in Kenworth and Peterbilt straight trucks.
Common PACCAR engine repairs
MX-13 EGR and turbo
EGR valve, EGR cooler, variable-geometry turbo and pressure sensors.
Aftertreatment
DOC, DPF, SCR, DEF doser and NOx sensors during derate or frequent regens.
Injection and fuel
Fuel pressure, injectors and hard starts.
Engine electrical
Harnesses, connectors and engine sensors on T680s and 579s.
Problems we diagnose
- Check engine light
- Fault codes
- Derate
- Power loss
- Hard starting
- Fuel injection
- Fuel pressure
- Turbo
- EGR
- Cooling system
- Overheating
- DPF
- DOC
- SCR
- DEF
- Regen
- Sensors
- Engine electrical
Related services
Trucks often fitted with PACCAR engines
Depending on the truck's year and spec.
FAQ
Are you a PACCAR dealer?
No. CM Montréal is an independent heavy-duty truck shop; we are not a PACCAR, Kenworth or Peterbilt dealer or warranty centre.
My MX-13 regens too often. Why?
A faulty sensor, injector, EGR or a fouled DOC can be the cause; electronic diagnostics confirm it.
Do you repair the PX-9?
Yes, we repair PX-9s in Kenworth and Peterbilt straight trucks.