Have this annoying ticking noise. Sounds like a tapping valve or lifter. Even when warmed up. Funny thing is no codes or engine lights she runs fine. Wondering has anyone experienced this. Its a 2001 only 96k Ive flush oil, changed both VVT sensors also swapped the fuel rail dampers which ive read causes possible injector noises. Still nothing . exhaust manifolds are fine aswell no leaks. Wondering if anyone has an idea or a tech on here. Who possibly has an answer or point me in the right direction much appreciated.