Alcohol in Fuel Testing with Special Tool, If Available
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- Test the fuel composition using the CH 44175-A Fuel Composition Tester and the Instruction Manual.
- If water appears in the fuel sample, clean the fuel system.
- Subtract 50 from the reading on the DMM in order to obtain the percentage of alcohol in the fuel sample.
- If the fuel sample contains more than 15 percent ethanol, add fresh, regular gasoline to the vehicle's fuel tank.
- Test the fuel composition.
- If testing shows the ethanol percentage is still more than 15 percent, replace the fuel in the vehicle.