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Diesel Truck Mechanic Shops in Moncton, NB

Find trusted diesel truck mechanic services in Moncton. Compare prices, read reviews, and book online.

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Brother Truck & Trailer Repair
Moncton • ≈ 10 km
BR
Brother Truck & Trailer Repair
2731 Mountain Rd, Moncton, NB E1G 2W5, Moncton
★ 5.0
19 Google reviews
Response ≈ 57 min • $ • Quotes free
Diesel Truck Mechanic Auto MechanicTruck Mechanic
📞 (437) 339-5002 • Free quote • Verified
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Jd truck and trailer repair (mobile)
Moncton • ≈ 5 km
JD
Jd truck and trailer repair (mobile)
85 Harrisville Blvd, Moncton, NB E1H 3T3, Moncton
★ 5.0
6 Google reviews
Response ≈ 46 min • $$ • Quotes free
Diesel Truck Mechanic Auto MechanicTruck Mechanic
📞 (437) 776-7708 • Free quote • Verified
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On Time Truck & Trailer repair
Moncton • ≈ 4 km
ON
On Time Truck & Trailer repair
1615 Shediac Rd, Moncton, NB E1A 7B3, Moncton
★ 5.0
3 Google reviews
Response ≈ 41 min • $$ • Quotes free
Diesel Truck Mechanic Auto MechanicTruck Mechanic
📞 (647) 509-1617 • Free quote • Verified
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Dhiman Truck & Trailer Repair
Moncton • ≈ 4 km
DH
Dhiman Truck & Trailer Repair
31 Mark Ave Unit H, Moncton, NB E1C 7H1, Canada, Moncton
★ 4.9
46 Google reviews
Response ≈ 57 min • $$$ • Quotes free
Diesel Truck Mechanic
📞 (506) 988-7718 • Free quote • Verified
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Pinder's Platinum Repair & Sales
Moncton • ≈ 10 km
PI
Pinder's Platinum Repair & Sales
212 Halifax St Unit B, Moncton, NB E1C 9S2, Moncton
★ 4.7
15 Google reviews
Response ≈ 50 min • $$ • Quotes free
Diesel Truck Mechanic Auto MechanicAuto Mechanic
📞 (506) 204-2447 • Free quote • Verified
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AK Truck & Trailer Repair Ltd
Moncton • ≈ 7 km
AK
AK Truck & Trailer Repair Ltd
295 Macnaughton Ave, Moncton, NB E1H 2S7, Moncton
★ 4.6
43 Google reviews
Response ≈ 60 min • $ • Quotes free
Diesel Truck Mechanic Auto MechanicTruck Mechanic
📞 (506) 961-4226 • Free quote • Verified
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Atlantic Fleet Maintenance
Moncton • ≈ 5 km
AT
Atlantic Fleet Maintenance
966 Frenette Ave, Moncton, NB E1H 2P8, Moncton
★ 4.6
41 Google reviews
Response ≈ 49 min • $$$ • Quotes free
Diesel Truck Mechanic Auto MechanicTruck & Heavy Duty
📞 (506) 855-3160 • Free quote • Verified
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1 Stop Truck Shop LTD
Moncton • ≈ 5 km
1
1 Stop Truck Shop LTD
385 Frenette Ave, Moncton, NB E1H 3S5, Moncton
★ 4.4
54 Google reviews
Response ≈ 15 min • $ • Quotes free
Diesel Truck Mechanic Auto MechanicTruck Mechanic
📞 (506) 372-5348 • Free quote • Verified
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Goguen Truck & Trailer Repair
Moncton • ≈ 8 km
GO
Goguen Truck & Trailer Repair
100 Caledonia Rd, Moncton, NB E1H 3C6, Canada, Moncton
★ 4.4
42 Google reviews
Response ≈ 24 min • $$ • Quotes free
Diesel Truck Mechanic
📞 (506) 858-5052 • Free quote • Verified
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Andy's Mobile Mechanic Services
Moncton • ≈ 9 km
AN
Andy's Mobile Mechanic Services
73 Donald Ave, Moncton, NB E1A 3B3, Moncton
★ 4.3
6 Google reviews
Response ≈ 38 min • $$$ • Quotes free
Diesel Truck Mechanic Auto MechanicAuto Mechanic
📞 (506) 688-6010 • Free quote • Verified
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Eastern Diesel
Moncton • ≈ 2 km
EA
Eastern Diesel
551 Ferdinand Boulevard Dieppe, Moncton, NB E1A 7G1, Canada, Moncton
★ 4.2
5 Google reviews
Response ≈ 26 min • $$ • Quotes free
Diesel Truck Mechanic Fuel SystemTruck & Heavy Duty
📞 (506) 387-7867 • Free quote • Verified
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Verified Reviews for Diesel Truck Mechanic
★ ★ ★ ★ ★

“Best service in Moncton so far”

Nik Mihalichev • Diesel Truck Mechanic at AK Truck & Trailer Repair Ltd, Moncton
★ ★ ★ ★ ★

“Manpreet is an excellent truck repair technician. He is very knowledgeable, honest, and gets the job done quickly. My truck had some serious issues, and he fixed everything perfectly at a fair price. Highly recommend him to anyone looking for reliable service.”

Śhäm Arora • Diesel Truck Mechanic at On Time Truck & Trailer repair, Moncton
★ ★ ★ ★ ★

“Fast service & good work”

JAGJIT SINGH • Diesel Truck Mechanic at Brother Truck & Trailer Repair, Moncton
★ ★ ★ ★ ★

“Very fast, affordable, friendly, and compassionate as we had an emergency fix driving from Ontario”

toolgoinc devices • Diesel Truck Mechanic at Pinder's Platinum Repair & Sales, Moncton
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Find a Best Diesel Truck Mechanic in Moncton, NB

Need a reliable mechanic for Diesel Truck Mechanic in Moncton? We've verified 11 local shops ready to help. Check their availability and get a quote instantly.

Common Diesel Truck Issues

Contaminated diesel fuel or clogged fuel filters restricting flow
Failing fuel injectors or high-pressure fuel pumps (HPFP) losing rail pressure
Clogged EGR valves and cracked EGR coolers causing overheating and coolant loss
Turbocharger bearing failure, sticking variable-geometry vanes, or boost leaks
Glow plug or intake heater malfunctions preventing cold-weather starting
Diesel Particulate Filter (DPF) clogging from excessive idling or short trips

When to Book a Diesel Mechanic

Hard starting or extended cranking, especially in cold weather
Excessive black smoke (rich running), white smoke (coolant leak), or blue smoke (oil burning) from the exhaust
Distinct metallic "knocking" or "clatter" sound indicating injector or bearing failure
Check Engine light, Water in Fuel warning, or emission system derate mode
Significantly reduced towing power, turbo lag, or sluggish acceleration
Frequent forced DPF regeneration cycles or "Exhaust Filter Full" warnings on the dash

Diesel Truck Mechanic Services Available

Diesel Fuel System Repair

Injector replacement, high-pressure fuel pump rebuilds, and rail pressure testing

Turbocharger Diagnostics & Replacement

Boost leak testing, VGT actuator repair, and full turbo replacement

EGR/DPF/DEF Emission System Service

EGR cooler replacement, DPF cleaning/baking, and DEF injector diagnostics

Glow Plug & Cold Start Service

Testing, extraction of seized glow plugs, and intake heater repair

Diesel Engine Diagnostics

Factory-level scanning for Cummins, Duramax, Power Stroke, and Detroit engines

Diesel Performance Tuning

ECM calibration, exhaust upgrades, and intake system optimization

Diesel Truck Mechanic Tips

Always purchase diesel fuel from high-volume, reputable stations to minimize contamination risk
Drain the water separator at every oil change and immediately if the Water in Fuel light illuminates
Use a high-quality winter anti-gel additive when temperatures consistently drop below -15°C
Avoid excessive idling—it prevents the DPF from reaching regeneration temperature and causes clogging
Let the turbo cool down by idling for 30-60 seconds before shutting off the engine after heavy towing
Follow the severe-duty oil change interval if you tow, haul, or drive in extreme temperatures regularly

Frequently Asked Questions

Are diesel truck repairs more expensive than gas engine repairs in Moncton? +
Generally, yes. Diesel engines operate at much higher pressures and tolerances than gasoline engines. Components like fuel injectors ($300-$600 each), high-pressure fuel pumps ($1,500-$3,000), and turbochargers ($1,500-$3,500) are significantly more expensive. Diesel-specific diagnostic tools and specialized labor also contribute to higher repair costs.
How much does a diesel fuel injector replacement cost in Moncton? +
A single diesel injector replacement costs $500-$1,000 including parts and labor. Replacing all injectors on a common 6-cylinder diesel (Cummins 6.7L, Duramax 6.6L, or Power Stroke 6.7L) typically runs $3,000-$6,000+. It's often recommended to replace all injectors at once to avoid repeat labor costs.
What does it mean when my diesel truck goes into derate or limp mode? +
Derate mode is the engine's ECM intentionally reducing power to protect itself from further damage, usually triggered by emission system faults (DPF, DEF, EGR), overheating, or low oil pressure. You should drive only to the nearest safe repair facility at reduced speed. Ignoring derate can lead to a complete engine shutdown.
How often should I service my diesel truck's DPF system? +
Most diesel DPF systems require a professional cleaning (ash removal) every 150,000-300,000 km, depending on driving conditions. Trucks driven primarily in city stop-and-go traffic or at idle may need it sooner. A DPF cleaning costs $300-$600 and is far cheaper than a replacement filter ($2,000-$5,000+).

Diesel Truck Mechanic in Nearby Cities

Saint John Fredericton Dieppe Riverview Quispamsis Miramichi Edmundston Bathurst

Other Services in Moncton

Auto Mechanic Truck Mechanic Oil Change & Lube Brake Services Tires & Wheels Auto Detailing Auto Body & Paint Windshield & Glass

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