Particulate Contaminants In Fuel Testing Procedure
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Sonoma, 2003 GMC Safari, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
The fuel sample should be drawn from the bottom of the tank so that any water present in the tank will be detected. The sample should be bright and clear. If the sample appears cloudy, or contaminated with water, as indicated by a water layer at the bottom of the sample, use the following procedure to diagnose the fuel.
- Using an approved fuel container, draw approximately 0.53 qt. (0.5 liter) of fuel.
- Place container on a level surface for approximately 5 minutes in order to allow settling of the particulate contamination. Particulate contamination will show up in various shapes and colors. Sand will typically be identified by a White or light Brown crystals. Rubber will appear as Black and irregular particles.
- Observe fuel sample. If any physical contaminants or water are present, clean fuel system. Refer to FUEL SYSTEM CLEANING .