Checking Fuel Injection System
Check intake system for air leakage according to INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT .
HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.
Check fuel pressure according to CHECKING FUEL AND RESIDUAL PRESSURES .
Test drive the car for approximately 10 minutes
Check the mass air flow (MAF) sensor by read off its correction factors. The value should 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
- To access/replace the mass air flow (MAF) sensor, see FUEL SYSTEM - REMOVAL, REPLACEMENT AND INSTALLATION .
- Continue
Refer to VERIFICATION