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Home >> Ford >> 2012 >> Focus Electric >> Repair and Diagnosis >> External Pages >> Different car >> Section 371 (Engine System - General Information (Except Electric Vehicle)) >> General Procedures >> Cylinder Head Distortion

Cylinder Head Distortion

WARNING: This page is about a different car, the 2015 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.

Special Tool(s) / General Equipment 

Feeler Gauge

Check 

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

  1. 1.

    NOTE: Make sure all cylinder head surfaces are clear of any gasket material, silicone sealant, oil and coolant. The cylinder head surface must be clean and dry before running a flatness check.
    NOTE: Use a Straightedge that is calibrated by the manufacturer to be flat within 0.005 mm (0.0002 in) per running foot of length, such as Snap-On® GA438A or equivalent. For example, if the Straightedge is 61 cm (24 in) long, the machined edge must be flat within 0.010 mm (0.0004 in) from end to end.

    Using a Straightedge and a Feeler Gauge Set, inspect the cylinder head for flatness in the sequence shown in illustration.

    Use the General Equipment: Feeler Gauge

Fig 1: Inspecting Cylinder Head For Flatness In Sequence
GFD60754Courtesy of FORD MOTOR COMPANY