Hi Guys,

I did further checks. I took out the Turbo, it looked fine, but the exhaust manifold was slack. I re-installed and the ZZZZZZZZing sound has stopped. Still low boost. But now I am seeing an oil leak from the exhaust Camshaft seal. I must replace both cam seals before I go further. I also took out the intake plenum and sealed it properly. Hopefully this should the boost problem.

By the way, does anyone know the Camshaft and Crankshaft timing marks.