Valve Lash Adjusters Noise Inspection
WARNING: This page is about a different car, the 2004 Suzuki Vitara. However, it is still accessible from the selected car via links, so may be relevant.
If case of the followings, valve lash adjuster noise may be caused by air trapped into valve lash adjusters.
- Vehicle is left for 24 hours or more.
- Engine oil is changed.
- Hydraulic lash adjuster is replaced or reinstalled.
- Engine is overhauled.
If noise from valve lash adjusters is suspected, perform the following checks.
- Check engine oil for the followings.
- Oil level in oil pan - If oil level is low, add oil up to full level hole on oil level gauge.
- Oil quality - If oil is discolored, or deteriorated, change it. See appropriate maintenance for engine oil and filter change.
- Oil leaks - If leak is found, repair it.
- Oil pressure (refer to "OIL PRESSURE CHECK ".) - If defective pressure is found, repair it.
- Run engine for about half an hour at about 2000 to 3000 rpm, and then air will be purge and tapping sound will cease.
- Should tapping sound not cease, it is possible that hydraulic valve lash adjuster is defective.
Replace it if defective. If defective adjuster can't be located by hearing among 16 of them, check as follows.
- Stop engine and remove cylinder head cover.
- Push adjuster downward by hard (with less than 200 N (20 kg, 44 lbs) force) when cam crest is not on adjuster to be check if clearance exists between cam and adjuster. If it does, adjuster is defective and needs replacement. If it does, adjuster is defective and needs replacement.