Sentra XE L4-1597cc 1.6L DOHC MFI (GA16DE) (1997)
Valve Spring
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Measure free length and outer diameter of each valve spring. Also check for damage or deformation.
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Replace valve springs if deformed or fatigued.
Control Valves
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Check sliding surfaces of valves, sleeves and plugs. Refer to the illustration.
ASSEMBLY
CAUTION: Lay the control valve body down when installing valves. Do not stand the control valve body on edge.