FASTENER TIGHTENING SPECIFICATIONS
| Component | Fastener Size | Nm |
|---|---|---|
| Air Duct to Lock Carrier Bolt | 5 | |
| Air Filter Housing Bracket to Body Bolt | 10 | |
| Change Over Roller Cap to Intake Manifold Bolt | 10 | |
| Fuel Rail to Cylinder Head Bolt | 10 | |
| Intake Manifold to Cylinder Head Bolt | 13 | |
| Intake Manifold Support to Intake Manifold Bolt | 20 | |
| Lower Air Filter Housing Nut | 8 | |
| Mounting Pin to Air Filter Housing Bracket | 9 | |
| Mass Airflow Sensor to Housing Bolt | 3 | |
| Housing to Upper Air Filter Housing Bolt | 2 | |
| Throttle Valve Control Module/Bracket to Intake Manifold Bolt | 10 | |
| Upper Air Filter Housing to Lower Air Filter Housing Bolt | 2 | |
| Vacuum Actuator to Intake Manifold Bolt | 10 | |
| Vacuum Reservoir to Intake Manifold Bolt | 10 |
IF THE SPECIFICATION IS NOT REACHED, CHECK THE RESIDUAL PRESSURE
Watch the pressure decrease on the pressure tester. After 10 minutes the pressure must not drop below a 3.0 bar decrease.
If the pressure drops further
Start the engine and run at idle speed.
Turn the ignition off and close the pressure tester shut off lever -B- immediately.
Scheme 1
If he pressure no longer drops now
Check for the leak on the engine side. Repeat the residual pressure check. Close the shut off lever -A- this time to determine if there actually is a leak on the engine side.
Check the fuel rail and fuel injectors for leaks.
If the pressure drops again
(Leak on fuel tank side)
Check the fuel lines for leaks.
If no malfunctions are found in the fuel lines
Test the check valve of the fuel pump. Refer to FUEL PUMP CHECK VALVE, CHECKING .
If no malfunction is found here either
Replace the fuel filter.
When removing the pressure tester after completing the test
Turn off the ignition.
Place a cloth around the connection to catch any leaking fuel.