| Engine diagnosis | AED 350 to 950 | Fault review, scan, physical checks, and selected measurements | Intermittent faults and dismantling increase diagnostic time |
| Cooling leak repair | AED 650 to 3,800 | Confirmed hose, housing, thermostat, pump, or radiator repair with coolant and testing | Part location, overheating damage, and cooling-system specification |
| Oil leak repair | AED 550 to 4,500 | Confirmed gasket, seal, housing, cooler, or pan repair | Leak source, access, contamination, and related seals |
| Misfire repair | AED 650 to 5,500 | Testing plus selected ignition, injector, intake, wiring, or mechanical work | Cylinder count, parts, compression condition, and fault cause |
| Timing or valvetrain repair | AED 3,500 to 14,000 | Selected timing components, lifters, rockers, seals, fluids, and verification | Engine family, internal wear, parts scope, and access |
| Cylinder-head repair | AED 6,500 to 18,000 | Removal, inspection, suitable machining, gasket set, fluids, assembly, and testing | Overheating damage, valves, warpage, cracks, and parts availability |
| Engine rebuild | AED 12,000 to 32,000+ | Dismantling, measured internal assessment, agreed parts, machining, assembly, fluids, and tests | Block, crankshaft, pistons, heads, oil system, and machining needs |
| Replacement engine installation | AED 14,000 to 38,000+ | Matched new, used, or refurbished assembly, installation, fluids, adaptation, and checks | Engine identity, condition, accessories, shipping, and programming |