New timing chain tensioner problems.
Hello everyone. New here, and getting a little desperate. I've been through multiple timing chain tensioners. The most recent from the dealer, lasted about 800 miles before I started hearing rattle again. I replaced chains, guides, tensioner, etc at Christmas this year (about 15k ago) since that time, the 1st tensioner (from autozone) went bad and made my chain skip. Put everything back together and installed a warranty autozone tensioner, and it started rattling writhing a week or so. Pulled a old style tensioner out of a cobalt I had with 90k on it, and used that (very noisy) until the dealer one, which led me here.