Valve Clearance Check

WARNING: This page is about a different car, the 2003 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.

Remove the valve cover. For additional information, refer to VALVE COVER .

CAUTION: Turn the engine clockwise only, and use the crankshaft bolt only.

NOTE: Measure each valve's clearance at base circle, with the lobe pointed away from the tappet, before removing the camshafts. Failure to measure all clearances prior to removing the camshafts will necessitate repeated removal and installation and wasted labor time.

Fig 1: Measuring Valve Clearance

Courtesy of FORD MOTOR CO.

Use a feeler gauge to measure each valve's clearance and record its location.

NOTE: The number on the valve tappet only reflects the digits that follow the decimal. For example, a tappet with the number 0.650 has the thickness of 3.650 mm.

NOTE: A midrange clearance is the most desirable:

intake: 0.22-0.28 mm (0.008-0.011 inch)
exhaust: 0.27-0.33 mm (0.010-0.013 inch)

Select tappets using this formula: tappet thickness = measured clearance + the base tappet thickness - most desirable thickness.
Select the tappets and mark the installation location.
If any tappets do not measure within specifications, install new tappets in these locations. For additional information, refer to VALVE TAPPETS .