HEAVY-DUTY ENGINE REPAIR
Diesel Engine Service
FIND THE PROBLEM.
REPAIR WHAT THE ENGINE NEEDS.
ENGINE DIAGNOSTICS AND REPAIR FOR COMMERCIAL TRUCKS, SEMIS AND BUSES
Power loss, abnormal smoke, unusual noise, fluid consumption and difficult starting can indicate a problem within the engine or one of its supporting systems.
Bo’s Garage provides heavy-duty engine diagnostics and repair for Class 6, 7 and 8 trucks, semis and select charter or tour buses. We work with CAT, Cummins, Detroit Diesel, Mack, International, Volvo and Paccar engines.
We evaluate the symptoms and engine condition to determine whether a targeted repair can correct the problem or more extensive engine work should be considered.
ENGINE DIAGNOSTICS
Testing guided by symptoms and operating conditions
COMPONENT-LEVEL REPAIR
Repairs based on inspection and diagnostic findings
HEAVY-DUTY APPLICATIONS
Commercial trucks, semis and buses
Why Diagnosis Comes First
NOT EVERY ENGINE PROBLEM REQUIRES A COMPLETE REBUILD
DETERMINE WHERE THE PROBLEM BEGINS BEFORE REPLACING MAJOR COMPONENTS
Many engine symptoms can originate in more than one system. A loss of power, for example, may be caused by a fuel-delivery problem, restricted airflow, an electronic fault or internal engine wear.
Reviewing the symptoms, checking related systems and evaluating engine condition helps narrow down the cause.
The findings allow us to recommend a component-level repair when appropriate—or explain when engine rebuilding or additional machine work should be considered.
ENGINE WARNING SIGNS
Our Process
FROM ENGINE CONCERN TO REPAIR PLAN
A SYSTEMATIC APPROACH BASED ON SYMPTOMS, TESTING AND ENGINE CONDITION
REVIEW THE SYMPTOMS
We discuss the performance problem, when it occurs and any recent repairs or changes in operation.
INSPECT & DIAGNOSE
The engine and applicable supporting systems are inspected and tested to locate the likely cause.
DETERMINE THE REPAIR SCOPE
We review the findings and explain whether targeted repair, additional testing or more extensive engine work is recommended.
REPAIR & VERIFY
Approved repairs are completed, followed by the appropriate operating checks.
Repair or Rebuild?
THE CONDITION OF THE ENGINE DETERMINES THE RIGHT PATH
STRAIGHT ANSWERS BASED ON WHAT THE INSPECTION REVEALS
A component-level repair may be appropriate when the problem is isolated and the remaining engine components are in serviceable condition.
When wear or damage affects multiple internal components, continuing with individual repairs may not provide the most practical long-term solution. In those cases, we can discuss diesel engine rebuilding and the machine work required for the engine.
Bo’s Garage performs counter bore machining at our Thomasville shop and on location when required as part of an applicable engine rebuild.


