Valve Stem to Valve Guide Clearance

WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

SPECIAL TOOLS

	Dial Indicator Gauge with Holding Fixture 100-002 (TOOL-4201-C) or equivalent
	Clearance Gauge, Valve Guide 303-004 (TOOL-6505-E) or equivalent

NOTE: Refer to the appropriate engine article for the specification.

NOTE: The valve stem diameter must be within specifications before checking valve stem-to-valve guide clearance

NOTE: If necessary, use a magnetic base.

Fig 1: Measuring Valve Stem To Valve Guide Clearance

Courtesy of FORD MOTOR CO.

Install a Valve Guide Clearance Gauge on the valve stem and install a Dial Indicator Gauge with Holding Fixture. Lower the valve until the clearance gauge contacts the upper surface of the valve guide.
Move the clearance gauge toward the indicator and zero the indicator. Move the clearance gauge away from the indicator and note the reading. The reading will be DOUBLE the valve stem-to-valve guide clearance.