Fuel System Checks
- Check the type, quality, and alcohol content of the fuel. Oxygenated fuels have lower energy and may deliver reduced fuel economy. See FUEL SYSTEM SPECIFICATIONS and ALCOHOL/CONTAMINANTS-IN-FUEL DIAGNOSIS under FUEL SYSTEMS in SYSTEM & COMPONENT TESTING - 1.8L VIBE article.
- Check for the correct fuel pressure. See FUEL SYSTEM DIAGNOSIS under FUEL SYSTEMS in SYSTEM & COMPONENT TESTING - 1.8L VIBE article.