09 Tahoe/Dreaded tapping noise.....HELP PLEASE

[shannan kinnaird]

09 chevy 5.3 4wd was diagnosed to be valve spring on #4 cylinder. changed spring & retainer (i noticed when removing rocker arm that it wobbled/slack in it/too much play and at that moment i knew it was misdiagnosis on spring). replaced it anyway and still got tapping noise. truck sounds little better but not fixed. ive thought about buying lifter, pushrod, & rocker arm and trying that route. any suggestions would be greatly appreciated. truck been down toooo long and my better half is working out of my explorer and its slowly going to shit......help anybody

 

[Express Auto]

If it was a sudden issue, the Active Fuel Management lifters commonly collapse. If you crank the engine with the cover off, one or both rockers may not move. If one does not, it's a bad lifter. If both do not, the valve lifter oil control may be stuck open. I recommend replacing all lifters on that side and the guides too if the AFM lifter is bad.

 

[OR VietVet]

Best to have mod move this to proper section for better responses. You posted in the new 2021+ section and should be in the 2007-2014 section.

Welcome to the forum, the both of you.

 

[Miami-Dade]

Best to have mod move this to proper section for better responses. You posted in the new 2021+ section and should be in the 2007-2014 section.

Welcome to the forum, the both of you.

Moved