Engine Repair / Overhaul

Why engines are rebuilt

Like any part, an engine wears over time, and eventually major parts are too worn to work efficiently. Two main causes are worn engine bearings and worn piston rings.

Bearings support the crankshaft, connecting rods, and pistons, lubricated by motor oil. Wear is much faster when oil is not changed often enough or the engine runs low on oil. Piston rings seal the cylinders. Worn rings let combustion gases and oil get past them, which causes blow-by, oil consumption, and often blue-gray exhaust smoke.

Signs you may need a rebuild

• Oil consumption with blue or gray smoke from the exhaust, especially on startup or under acceleration
• Metal shavings in the engine oil
• Knocking or chattering from the bearings

What a rebuild involves

The engine is disassembled and the block is machined back to specification. Piston rings, bearings, and sometimes pistons are replaced, and the cylinder surfaces are refinished so new rings seal tightly. The cylinder head is often refinished too.

Weigh your options

A rebuild is a major job and is not always the right choice. Swapping in a new or used engine in better condition may be cheaper, so we help you compare. Talk to a service advisor at any of our Long Beach or Bellflower shops.