Engine Mechanical

A variety of engine mechanical conditions may result in a hard start condition without setting a DTC. To determine if any of these conditions exist. 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.

If incorrect compression is detected, check for carbon build-up, cam timing, oil fouling, incorrect parts, bent pushrods, rocker arms, valve springs, cam lobes, intake/exhaust manifold flashing and faulty head gaskets.