Checking Fuel Injection System
Check intake system for air leakage according to CHECK FOR AIR LEAKS IN THE INTAKE SYSTEM .
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 the exhaust system for leakage according to CHECKING FOR AIR LEAKAGE IN THE EXHAUST SYSTEM .
Check fuel and residual pressure according to CHECKING FUEL AND RESIDUAL PRESSURES .
Check that the oil level is between the minimum and maximum markings
Check engine dilution by, reading off the short-term fuel trim with the engine running, plug the crankcase ventilation and read off the short-term fuel trim again, the value should be more or less unchanged
Remedy as necessary.
Was a fault detected?
- YES
Refer to VERIFICATION
- NO
Refer to CHECKING MASS AIR FLOW (MAF) SENSOR