24/7 emergency mobile diesel engine repair across Toronto and GTA. Professional roadside engine diagnostics and repairs on all major highways.
When your diesel engine fails on Highway 401, 427, 404, or QEW, you need expert repair service fast. Our mobile diesel engine repair specialists bring professional diagnostic equipment and repair capabilities directly to your breakdown location across the Greater Toronto Area. From overheating issues to complete engine failure, we handle complex diesel repairs 24/7 in compliance with Ontario commercial vehicle safety requirements.
Our certified diesel technicians carry advanced diagnostic tools and maintain an extensive inventory of engine components for all major truck makes including Cummins, Detroit Diesel, Caterpillar, and more. Whether you're dealing with fuel system problems, cooling system failure, or major mechanical issues, our mobile workshop capabilities allow us to perform comprehensive repairs on-site, saving you expensive towing costs and reducing downtime.

Expert diesel engine repair across all GTA highways and locations.
Engine problems often require additional services. We also provide Cooling System Repair, Electrical Diagnostics, and Heavy-Duty Repairs.
Get answers to common questions about this service
Yes, our mobile units carry professional OBD-II and manufacturer-specific diagnostic scanners that can read fault codes, perform live data analysis, and pinpoint most diesel engine issues right at your breakdown location. We service all major engine brands including Cummins, Detroit Diesel, Caterpillar, and PACCAR across the Toronto and GTA area.
The most frequent issues we see are fuel system problems like clogged injectors and failing fuel pumps, turbocharger failures, and cooling system leaks that lead to overheating. EGR valve and DPF filter issues are also very common on newer trucks, especially those doing a lot of stop-and-go driving on Highway 401 through Toronto. Cold-weather hard starting is another frequent winter call.
It varies widely depending on the issue. Simple repairs like sensor replacements, belt changes, or fuel filter swaps can be done in 30 minutes to an hour. More involved work like turbo replacements, injector service, or head gasket repairs can take 3 to 6 hours. We give you a time estimate before starting so you can plan accordingly.
Yes, our mobile units carry an extensive inventory of the most commonly needed diesel engine parts including filters, belts, hoses, sensors, thermostats, water pumps, and starter motors. For less common parts, we have relationships with suppliers across the GTA who can deliver to your breakdown location, often within a couple of hours.
Contact Toronto's diesel engine repair specialists for fast, professional service
Get Free Quote & Schedule ServiceDon't let engine failure strand you – call for expert mobile diesel repair
Call (289) 273-2247 for immediate roadside assistance