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In order for the timing chain on the Niva not to rattle when starting, you need to replace the hydraulic chain tensioner with an automatic one! The hydraulic chain tensioner for the Lada 4x4 and now the Niva Legend almost immediately, and for some a little later, after leaving the showroom, becomes unusable and the chain begins to make strange sounds when starting the engine. In order to avoid critical breakdowns and engine malfunctions, it is recommended, of course unofficially, to change the standard chain tensioner to a mechanical one, it is also called automatic. Its operating principle is very simple. This is an ordinary spring that pushes out the rod and a ratchet mechanism that fixes it. How long a new Niva lasts on a standard hydraulic tensioner is not clear, but a mechanical one, be it ISAI, Topol 2M, or Pilot, will work flawlessly for the entire service life of the engine. Video about replacing a hydraulic tensioner with an automatic tensioner