LEMON Manuals: Even more car manuals for everyone
Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 117 (Engine Control System & Fuel - 4.8L, 5.3L, 6.0L And 6.2L - Diagnosis & Troubleshooting) >> Alcohol/Contaminants-in-Fuel Diagnosis >> Alcohol in Fuel Testing with Special Tool

Alcohol in Fuel Testing with Special Tool

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  1. Test the fuel composition using J 44175  and Instruction Manual. See Special Tools .
  2. If water appears in the fuel sample, clean the fuel system.
  3. Subtract 50 from the reading on the DMM in order to obtain the percentage of alcohol in the fuel sample.
  4. If the nonblended gasoline fuel sample contains more than 15 percent ethanol, or if the E85 blended gasoline fuel sample contains more than 85 percent ethanol, add fresh regular gasoline to the vehicles's fuel tank.
  5. Test the fuel composition.
  6. If additional testing indicates that the ethanol percentage is still more above 15 percent for a nonblended gasoline sample, drain and replace the vehicle's fuel. Refer to Fuel System Cleaning . If additional testing indicates that the E85 blended gasoline sample is still above 85 percent, continue adding fresh, regular gasoline until the ethanol content is 85 percent or less.
scientia non olet · About LEMON Manuals