[s-cars] Wastegate stem leak

[Dave Tremblay]

Lately, i've been experiencing all sorts of uncontrollable boost problems(mostly overboost, 25+ psi highway). All the system as been pressure tested and everything looked OK. 

 

On another post today i was asking about wg springs for my Mrc stg2 chipset, maybe the 1.9 bar spring that could be my problem, i tought. That made me think of the wastegate...so i checked the diaphragm, it is Ok. But, once i pressure test the now assembled wastegate i get air leak from the valve stem inside!