Sounds like a sticky lifter ...........
You can't fix a bad lifter, replace the bad lifter with a new one.
If a lifter is worn out you are not going to fix it, you will want to replace it with a new one.
If a lifter is stuck in the lifter bore and won't move, it has probably ruined the cam. The procedure would be to install a new cam and lifters.
I guess that you are talking about a hydraulic lifter for an auto engine. There is no repair for these. They can be converted to "solid" lifters or used as paper weights.
Answerif im not mistaking that sound should be the solenoid opening and closing.Improved: it also could be a sticky lifter, a lifter going bad, exhaust leak, or a spark not grounding right.
These engines are notorious for it. There's no harm in the lifter tick itself. It just sounds bad. The fix permanently, replace the lifters. There's a special tool (find it on eBay for cheap) which makes this an easy job.
Handy Manny - 2006 A Sticky Fix Paint Job is rated/received certificates of: Australia:G
A normal ticking is the fuel injectors opening and closing, a very loud ticking with bad mileage and poor performance may be a sticky lifter, aka hydraulic valve lash adjuster. If the latter try something like Marvel's Mystery Oil or another sticky lifter nostrum before launching into a difficuly and expensive replacement.
get a new v sleave
No, they are located under the valve cover.
Try using an engine flush. I have had luck with GUNK. Follow the directions on the can.