Why is my timing chain making noise when I start the car?
Why is my timing chain making noise when I start the car? The reason timing chains can be noisy on start up is either the pressure in the oil charged tensioner is bleeding off, or there is extra slop in the chain system that the tensioner isn’t design to take up. Dirty oil can lodge debris in the tensioner that will keep the check valve open bleeding... What to do if your timing chain rattles? Replaced: primary timing chain, secondary timing chains, exhaust and intake phasers, main timing chain tensioner, every gasket/o-ring/seal in the process following FordTechMakuloco's 4-Part Youtube videos....