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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 380 (Engine Controls - Trouble Shooting - No Codes - 3.4L) >> Symptoms >> Lack Of Power, Sluggish Or Spongy >> Engine Mechanical

Engine Mechanical

WARNING: This page is about a different car, the 2003 Pontiac Grand Am, 2003 Oldsmobile Alero, 2003 Chevrolet Monte Carlo, and 2003 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check for excessive oil in the combustion chambers and leaking valve seals. See appropriate article in ENGINES.
  2. Check for low cylinder compression. See COMPRESSION under MECHANICAL INSPECTION under PRELIMINARY INSPECTION & ADJUSTMENTS in BASIC DIAGNOSTIC PROCEDURES - 3.4L ALERO, GRAND AM, IMPALA & MONTE CARLO article.
  3. Check for incorrect basic engine parts. Check the camshaft, cylinder heads, pistons, etc. Go to appropriate article in ENGINES.
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