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Engine Mechanical

  1. Check and inspect engine mechanical for the following:
    • Check compression. See COMPRESSION under MECHANICAL INSPECTION under PRELIMINARY INSPECTION & ADJUSTMENTS in BASIC DIAGNOSTIC PROCEDURES - 3.8L BONNEVILLE, GRAND PRIX, IMPALA, LESABRE, MONTE CARLO, PARK AVENUE & REGAL article.
    • Sticking or leaking valves, worn camshaft lobes, valve timing, bent push rods, worn rocker arms, broken valve springs or excess oil in combustion chambers. See appropriate article in ENGINES.
  2. Inspect for incorrect basic engine parts, such as camshaft, cylinder heads, pistons, etc. See appropriate article in ENGINES.