Valve Clearance Inspection: Notes

WARNING: This page is about a different car, the 2001 Mazda Millenia and 2001 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: On Millenia, valve clearance is not adjustable. Some Hydraulic Lash Adjuster (HLA) noise may occur during engine start-up. Noise should disappear after engine reaches normal operating temperature. If noise persists, run engine at 2000-3000 RPM and noise should stop within 20 minutes. If noise persists, change engine oil. If oil change does not reduce noise, replace HLA. Also, replace HLA if HLA to camshaft clearance exceeds .006" (.15 mm).