Component Tests and General Diagnostics

TEST
Draw fuel sample from bottom of tank so any water present will be detected. Sample should be bright and clear.

If sample appears cloudy or contaminated with water (as indicated by a layer at the bottom of the sample), this procedure should not be used Fuel system should be cleaned.

- Using a 100 ml cylinder with 1 ml graduation marks, fill to 90 ml mark.
- Add 10 ml of water to bring the total fluid volume to 100 ml and install a stopper.
- Shake vigorously for 10 to 15 seconds.
- Carefully loosen stopper to release pressure.
- Close stopper and shake vigorously again for 10 to 15 seconds.
- Put graduated cylinder on a level surface for approximately 5 minutes to allow adequate liquid separation.

RESULTS
If alcohol is present, volume of lower layer (which would now contain both alcohol and water) will be greater than 10 ml. For example, if lower layer volume is increased to 15 ml, it indicates at least 5% alcohol in the fuel. Actual alcohol content may be somewhat greater because this procedure does not extract all alcohol from the fuel.