Valve Spring Inspection - Mazda MX-5 Miata Sport 2007 Manual

2007 Mazda MX-5 Miata Sport
2006-08 ENGINE Mechanical - Overhaul - 2.0L (LF) & 2.3L (L3) - Mazda6 & MX-5 Miata
Fig. 35: Measuring Protruding Length (Dimension L) Of Valve Stem
Courtesy of MAZDA MOTORS CORP.

VALVE SPRING INSPECTION

1. Apply pressing force to the pressure spring and inspect the spring height.
If it is less than the specification, replace the valve spring.

Valve spring pressing force
390 N {39.76 kgf, 87.67 lbf}
Valve spring standard height H
28.68 mm {1.129 in}