Can I check the exhaust gas pressure with toaf or with torque app for example? And if yes, what values should it read?
Also, does the ancillary belt have it's own idler and tensioner? On dmgrs I only found the aux belt but neither a tensioner nor an idler for it
I tend to think that the noise is coming from the rear belt, the one closest to the engine firewall since there's the place where the noise is coming from, and not from the aux belt area of the engine
EDIT: I succesfully pinpointed with a listening stick that the ticking is coming 100% from the rear belt, the one closest to the firewall (right under the right side of the inlet manifold when looking at the engine). Done a little research and found out that the assembly is made out of 2 pulleys that are timing the admission and exhaust camshafts, correct me if I'm wrong. If that is the case, which one of the pulleys would be more prone to premature breaking?