Engine Mechanical
- Check engine mechanical for the following conditions:
- Check the compression. See MECHANICAL INSPECTION
in BASIC DIAGNOSTIC PROCEDURES - 3.1L CENTURY, GRAND PRIX & MALIBU article.
- Sticking or leaking valves.
- Worn camshaft lobes.
- Worn camshaft lobes.
- Valve timing.
- Bent push rods.
- Worn rocker arms.
- Broken valve springs.
- Excessive oil in combustion chamber. Leaking valve seals.
- Low cylinder compression.
- Check for incorrect engine parts, such as the camshaft, cylinder heads, pistons, etc.
- Diagnose mechanical condition of the engine. See appropriate article in ENGINES.