Mazda MX-5 Miata Sport 2007 Manual page 24

2006-08 ENGINE Mechanical - Overhaul - 2.0L (LF) & 2.3L (L3) - Mazda6 & MX-5 Miata
Fig. 23: Measuring Valve Head Margin Thickness Of Each Valve
Courtesy of MAZDA MOTORS CORP.
2. Measure the length of each valve. Replace the valve if necessary.
If it is less than the specification, replace the valve.
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Valve length (Standard)
IN: 102.99-103.79 mm {4.055-4.086 in}
EX: 104.25-105.05 mm {4.105-4.135 in}
Valve length (Minimum)
IN: 102.99 mm {4.055 in}
EX: 104.25 mm {4.104 in}
Fig. 24: Measuring Length Of Each Valve
Courtesy of MAZDA MOTORS CORP.
3. Measure the stem diameter of each valve in X and Y directions at the three points (A, B, and C) as
indicated in the figure.
If it exceeds the specification, replace the valve.
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2007 Mazda MX-5 Miata Sport