Vehicle applicability: This diagnostic supplement covers multiple Ford vehicles and engines. Follow the application named in the source below. Some references apply to vehicles other than Mustang.
• Add enough water from the 200 ml beaker to the 25 ml graduated cylinder to bring the total volume of liquid to 24 ml.
• Insert a stopper plug in the opening of the 25 ml graduated cylinder.
• Firmly hold the stopper in place and shake the 25 ml graduated cylinder to mix the water and fuel.
• Allow the liquid to stand and separate for approximately 3 minutes.
• Record the separation level from the 25 ml graduated cylinder where the ethanol and water mixture and gasoline meet.
Does the ethanol and water mixture and gasoline separate?
Yes | No |
|---|---|
GO to H17 . | The ethanol and water mixture will separate from the gasoline. If the fuel does not appear to separate, then the fuel is either 100% ethanol or a mixture of ethanol and water. REPLACE the contaminated fuel. Clear the PCM DTCs. REPEAT the self-test. |
H17 CALCULATE THE PERCENTAGE OF ETHANOL IN THE FUEL
Note: Use the illustration as an example for calculating the percentage of ethanol in the following steps. If the separation level is at 14 ml the calculation becomes; 14 minus 4, then multiply by 5 to equal 50. The percentage of ethanol in the fuel is 50%.
• Ignition OFF.
• Take the recorded separation level from the previous step and subtract the amount of water added.
• Multiply the new value by 5. This new value is the percentage of ethanol in the fuel.
Item Number | Description |
|---|---|
1 | Stopper |
2 | Gasoline |
3 | Separation Point at 14 ml |
4 | Ethanol and Water Mixture |
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.