Cylinder Head Distortion

2009 Mercury Milan Premier, 3.0 1, AWDSECTION Cylinder Head Distortion
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 TOOL(S)

G04617861
Straight Edge
303-D039 (D83L-4201-A) or equivalent
  1. Use a straight edge and a feeler gauge to inspect the cylinder head for flatness. If the cylinder head is distorted, install a new cylinder head.
    Fig 1: Inspecting Cylinder Head Flatness
    G04617862Courtesy of FORD MOTOR CO.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.