Explorer 4WD V8-4.6L (2008)
Connecting Rod-to-Piston Clearance
1. Measure the clearance between the connecting rod and the piston. Verify the measurement is within specification.
Connecting Rod Bearing Journal-to-Bearing Clearance
NOTE: The crankshaft connecting rod journals must be within specifications to check the connecting rod bearing journal clearance.
1. Remove the connecting rod bearing cap.
2. Position a piece of Plastigage(R) across the bearing surface.
3. NOTE: Do not turn the crankshaft during this step.
Install and tighten to specifications, then remove the connecting rod bearing cap.
4. Measure the Plastigage(R) to get the connecting rod bearing journal clearance. The Plastigage(R) should be smooth and flat. A changing width
indicates a tapered or damaged connecting rod or connecting rod bearing.