TURBO Noise?? help

[weisshorn]

So far, we cleaned the manifold (inlet and exhaust), we used an egr, intercooler and a turbo from a friend, whom I thankful I was able to borrow the parts I needed for testing…

We found an unexplainable factor affecting the turbo…

The egr valve, if blocked, will cause the inlet hose to be very hard or full of pressure… results in the loud wheezing of turbo (maybe due to over pressure.. tama po ba?) I might be wrong but my opinion is as ff: 1. full exhaust gas pressure driving turbo charger to high rpm higher than required thus increasing boost air above normal. Mangyayari ito dahil sarado ang exhaust recirculation line (blocked egr valve). is EGR valve automatic control defective? 2. Too high exhaust gas driving pressure due to defective waste gate of the turbo charger (waste gate sticking or automatic control mechanism defective?).

If the egr valve will be left open, knocking sound and black smoke appears upon rev, plus loss of power results… IMHO this is normal kapag full open ang egr valve kasi dapat regulated ang amount ng exhaust gas na i-recirculate punta sa combustion chamber na hindi maka apekto ng good combustion. (Mga guru please correct me if I am wrong.

Can anyone figure this out for me? Thanks

Please check:
1. turbo charger waste gate & control mechanism (solenoid/vacuum, etc).
2. EGR control (solenoid, etc).

Sana makatulong, Good luck po sir.

Ano po pala ang engine model ng pajero mo?