Mechanical engine repair is considered after the cause of lost performance or integrity has been established. Cylinder, cylinder-head, crank mechanism and seal condition help determine whether a local repair or broader rebuilding is appropriate. A complaint alone does not define the scope: oil consumption, noise or mixed fluids require investigation before dismantling is agreed.
This category covers the engine's principal mechanical components. Inspection establishes what remains serviceable, what needs machining or replacement and how the findings relate to the failure cause. Scope follows actual condition rather than a predetermined set of operations. Fuel control, cooling or boost issues are considered as related service areas where they contributed to the damage.