Fuel Injector Balance Test with Special Tool: Notes
Courtesy of GENERAL MOTORS CORP.
| Callout |
Component Name |
| 1 |
First Fuel Pressure Gage Reading |
| 2 |
Second Fuel Pressure Gage Reading |
Fuel Injector Balance Test Example (Typical)
| Cylinder |
1 |
2 |
3 |
4 |
| 1st Reading |
360 kPa (52 psi) |
360 kPa (52 psi) |
360 kPa (52 psi) |
360 kPa (52 psi) |
| 2nd Reading |
155 kPa (22 psi) |
111 kPa (16 psi) |
155 kPa (22 psi) |
249 kPa (36 psi) |
| Amount of Drop |
205 kPa (30 psi) |
249 kPa (36 psi) |
205 kPa (30 psi) |
151 kPa (22 psi) |
| Average Range: 156-176 kPa (22.5-25.5 psi) |
Injector OK |
Replace fuel injector - too much fuel pressure drop |
Injector OK |
Replace fuel injector - too little fuel pressure drop |