Mack Engine Service & Repair
Expert diagnostics, maintenance, and repair for all Mack diesel engines at our Sidney and Brookville, Ohio locations
About Mack Trucks, Inc.
Mack Trucks manufactures heavy-duty diesel engines built for the toughest applications. Known for durability and reliability, Mack engines feature innovative technology and are specifically designed for vocational and construction applications.
Headquarters:
Greensboro, North Carolina, USA
Founded:
1900
Specialties:
Mack Engine Models We Service
MP8
Applications:
- Highway
- Heavy haul
- Vocational
MP7
Applications:
- Regional
- Vocational
- Construction
MP8-TC
Applications:
- Fuel economy focused
- Long haul
MP10
Applications:
- Severe duty
- Heavy haul
Common Mack Fault Codes
P1211
Injector Control Pressure Above/Below Desired
Symptoms:
- Rough idle
- Hard starting
- Power loss
Possible Causes:
- Injector failure
- High pressure pump issue
- Fuel quality
P2463
DPF Restriction - Soot Accumulation
Symptoms:
- Frequent regenerations
- Reduced power
- Poor fuel economy
Possible Causes:
- Driving conditions
- Failed regenerations
- Engine issues
P207F
DEF Quality Poor
Symptoms:
- DEF warning
- Engine derate pending
- Increased consumption
Possible Causes:
- Contaminated DEF
- Old DEF
- Sensor malfunction
P0402
EGR Flow Excessive
Symptoms:
- Black smoke
- Rough running
- Intake fouling
Possible Causes:
- EGR valve stuck open
- Control issue
- Sensor fault
Experiencing a fault code? Our certified technicians can diagnose and repair any Mack engine issue.
Get Diagnostic HelpMack Maintenance Schedule
Oil & Filter Change
Every 35,000-50,000 miles
Use Mack EO-O Premium Plus approved oil
Fuel Filter Service
Every 35,000-50,000 miles
Replace both primary and secondary filters
Overhead Adjustment
Every 150,000-200,000 miles
Adjust valves and injectors for optimal performance
DPF Maintenance
Every 300,000-400,000 miles
Professional ash removal and inspection
Coolant Service
Every 300,000 miles
Flush and refill with Mack approved ELC
mDRIVE Service
Every 500,000 miles
Transmission fluid and filter replacement
Mack Emission Systems
DPF System
Mack DPF with ClearTech One aftertreatment
Maintenance Tips:
- Complete all requested regenerations
- Use approved low-ash oil
- Minimize idle time
- Schedule regular cleanings
Common Issues:
- Blocked filter face
- Sensor malfunctions
- Incomplete regens
- Ash accumulation
SCR System
Mack SCR system with optimized DEF usage
Maintenance Tips:
- Maintain DEF quality
- Service dosing module
- Check for crystallization
- Monitor efficiency
Common Issues:
- Dosing valve failures
- DEF pump issues
- Catalyst degradation
- NOx sensor problems
DEF System
DEF system with heated components for all climates
Maintenance Tips:
- Use certified DEF only
- Check heater function
- Replace filter regularly
- Prevent contamination
Common Issues:
- Heater failures
- Pump malfunctions
- Sensor errors
- Line crystallization
EGR System
High-efficiency cooled EGR system
Maintenance Tips:
- Clean EGR cooler
- Check valve operation
- Monitor delta pressure
- Inspect for leaks
Common Issues:
- Cooler plugging
- Valve carbon buildup
- Coolant leaks
- Sensor failures
Expert Mack Engine Service at Two Convenient Locations
With over 15 years of experience, Wayne Truck & Trailer is your trusted partner for all Mack engine repairs and maintenance.
Serving Sidney, Brookville, Dayton, Piqua, Troy, Bellefontaine, and surrounding areas