Checking the fuel injection system
Check the intake system for air leakage.
HINT: Air leakage in the intake system can occur through the evaporative emission system (EVAP) valve, the secondary air solenoid valve or the power brake booster.
Check the fuel pressure.
Test drive the car for approximately 10 minutes.
Read off the correction factor of the mass air flow (MAF) sensor. The value must be between 0.8 and 1.2.
NOTE:
There must not be any air leakage when this test is carried out.
Remedy as necessary.
Other information
- See Check for air leaks in the intake system
- See Checking fuel and residual pressures
- See Mass air flow sensor (MAF), replacing
- Continue
Refer to Verification