Engine Diagnostics and Repair

Real diagnostics. Real repairs. Less downtime.

When a diesel engine is running rough, losing power, overheating or throwing warning lights, the real cost is downtime. Bennett Mobile Truck Repair provides on-site engine diagnostics and repair for semi trucks, fleet trucks, heavy equipment and RV motorhomes across South Georgia and North Florida. We are based in Hahira with 24/7 availability and priority response for all I-75 calls.

We start with accurate diagnostics, not guesswork. Many engine problems share the same symptoms, so we verify the root cause before recommending parts or repairs. Using professional diagnostic tools and hands-on testing, we identify whether the issue is fuel-related, air-related, electrical, sensor-driven, aftertreatment-related or mechanical.

Stranded on I-75? Call now 24/7 for service. (229) 740-9286

Common engine problems we diagnose:

  • Loss of power, poor acceleration and reduced performance

  • Rough idle, misfires and hesitation

  • Overheating, coolant loss and repeat cooling issues

  • Hard-start, no-start and intermittent stalling

  • Excessive smoke or abnormal engine behavior

  • Check engine lights, fault codes and repeated derates tied to engine operation

Picture of a cylinder head overhaul on a diesel truck roadside assistance

What our engine diagnostics typically includes:

  • Fault code scanning and system checks when applicable
  • Live data review to confirm sensor and performance readings
  • Visual inspection of common failure points and leaks

  • Testing of starting, charging and electrical inputs that affect engine operation

  • Fuel delivery checks and verification of supply issues
  • Cooling system inspection when temperature is part of the problem
  • Step-by-step verification to confirm the failure before repair
Picture of a Fleet Tuck on roadside engine misfire troubleshooting and repair
Picture of a emergency roadside repair on a diesel truck has a broken bolt in block we drilled an tapped engine block
Picture of a serpentine belt needing to be replaced on a diesel
Picture of a bent push rod on a diesel truck emergency repair
emergency roadside Cylinder head overhaul on diesel

Engine repair you can trust

Once we confirm the cause, we explain what we found in plain language and lay out the repair plan. If the repair can be completed on-site, we handle it. If the problem requires a larger repair scope, we will tell you upfront and help you choose the smartest next step to minimize downtime.

Call Bennett Mobile Truck Repair 24/7 for engine diagnostics and mobile diesel repair across South Georgia and North Florida. (229) 740-9286

Certifications

CAT Certified

Cummins Certified

Service Area

Serving a 60-mile radius of Hahira across South Georgia and North Florida.

If you are broken down along I-75 or need dependable mobile diesel service at your yard, job site or location, call Bennett Mobile Truck Repair anytime.

South Georgia

  • Valdosta, Ga

  • Hahira, Ga

  • Lake Park, Ga

  • Adel, Ga

  • Tifton, Ga

  • Quitman, Ga

  • Thomasville, Ga

  • Moultrie, Ga

  • Douglas, Ga

North Florida

  • Jennings, Fl

  • Madison, Fl

  • Jasper, Fl

  • Live Oak, Fl

  • White Springs, Fl

  • Lake City, Fl