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.

Check engine mechanical for the following conditions:
- Compression. See COMPRESSION under MECHANICAL INSPECTION under PRELIMINARY INSPECTION & ADJUSTMENTS in BASIC DIAGNOSTIC PROCEDURES - 3.4L ALERO, GRAND AM, IMPALA & MONTE CARLO article.
- Sticking or leaking valves.
- Worn camshaft lobes.
- Valve timing.
- Worn rocker arms.
- Broken valve springs.
- Excessive oil in combustion chamber or leaking valve seals.
- For more information, go to appropriate article in ENGINES.
- Check for incorrect basic engine parts. Check the camshaft, cylinder heads, pistons, etc. in appropriate article in ENGINES.
- Go to appropriate article in ENGINES for diagnosis procedures.