Ford Engine Spark Knock Under Light Load and Acceleration - Engine Builder Magazine

Ford Engine Spark Knock Under Light Load and Acceleration

Inspect for disconnected IMRC actuator rods. Follow the service steps to correct this condition.

Service Procedure:

1) Check both right hand and left hand side IMRC rods to be sure
they are properly attached to the actuator motor and intake manifold
runner.

2) If the IMRC actuator rods are found to be connected properly, do not continue with information.

3) If any IMRC actuator rods are disconnected, refer to service manual.

4) If any IMRC actuator rod linkages are found disconnected, replace all four linkage rod retainers (Figure 1).

Some or all of this information was provided by the Automotive
Parts Remanufacturers Association (APRA). For more information on
technical bulletins available through APRA call 703-968-2772 or visit www.AutoBulletins.com.
Figure 1

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