Engine Controls - Tests W/O Codes - EEC 2.5L: Symptoms: Backfires
- Check for vacuum leaks.
- Check ignition system. See BASIC TESTING - 4-CYL article in the ENGINE PERFORMANCE section.
- Check engine compression. Check engine mechanical condition. Check intake manifold, manifold gasket, camshaft and valves.
- Perform QUICK TEST. See TESTS W/CODES - EEC 2.5L article in the ENGINE PERFORMANCE section.
- Check for leaking or restricted exhaust system.
- Check fuel delivery. efer to the appropriate I - SYSTEM/COMPONENT TESTS - EEC (2.5L) article in the ENGINE PERFORMANCE section.