Chevy Tahoe Valve Clatter

[quote:5af4a4cdb2="sheracad"]1998 Chevy Tahoe LT, 130,000 miles.
When accelerating, the engine valves clatter.
Aren't they self-adjusting? How do I fix this?
Thanks,
Greg[/quote:5af4a4cdb2]

if its the valves then remove the covers and tighten them. its more likely the lifters, drain the oil and replace it with hydrolic fluid, let it run for a few minutes the empty it and replace the oil. u should probably let a shop do this for you.