Pressure Drop Calculation

Pressure Drop Calculation
1. Subtract the second pressure reading from the first pressure reading for one fuel injector. The result is the pressure drop value.
2. Obtain a pressure drop value for each fuel injector.
3. Add all of the individual pressure drop values. This is the total pressure drop.
4. Divide the total pressure drop by the number of fuel injectors. This is the average pressure drop. The difference between any individual pressure drop and the average pressure drop should not be more than 20 kPa (3 psi).
- If the difference between any individual pressure drop and the average pressure drop is more than 20 kPa (3 psi), perform the Fuel Injector Cleaning.