Static (Engine Off) Valve Train Analysis

Valve Cover Removed

NOTE: Refer to Section 03-01A (3.8L) or Section 03-01B (5.0L) for the Removal and Installation of the engine valve cover (6582) .

Check for damaged and/or severely worn parts, correct assembly, and ensure use of correct parts by proceeding, as follows, with the static engine analysis.

Rocker Arm

• Check for loose mounting bolts, studs and nuts.
• Check for plugged oil feed in the rocker arm (6564) or cylinder head (6049) .
• Check that roller rocker arms are centered over the stem (5.0L Cobra only).

Push Rods

• Check for bent push rods (6565) and restriction in oil passage.

Valve Springs

• Check for broken or damaged parts.

Valve Spring Retainer and Valve Spring Retainer Keys

• Check for proper seating of valve spring retainer keys (6518) on valve stem and in valve spring retainer (6514) .

Positive Rotator and Keys

• Check for proper seating in the positive rotator, and on valve stem.

Valves and Cylinder Head

• Check the head gasket (6051) for proper installation.
• Check for plugged oil drain back holes.
• Check for worn or damaged valve tips.
• Check for missing or damaged guide-mounted valve stem seals (6571) .
• Check collapsed valve tappet gap.
• Check installed valve spring height.
• Check for missing or worn valve spring seats, if equipped.