If all else fails... check the EASY stuff!!
 

took my HTB2 off for maintance, installed a hx35. We took her out for a test spin, i reached 20 psi and heard a big POOF, knew it was something with the turbo.. etc.. i thought $hit!!! so pulled the wastgate off inspected that... inspeced (i thought) everthing.. went to bed pissed off last night wondering what the heck could it be???:argh::argh::argh:
took my HTB2 to a local Diesel shop and talked to them about it.. they were kinda stumped too.. what could it be what could it be??:s::scare2::s:

i took the aircleaner tube off and spun the shaft by hand everthing seemed perfect????
WTF could it be..
well upon further inspection the tube that connects to the intercooler from turbo popped off.. talk about overthinking a situation... man do i feel like an idiot?!?!?:dang::argh:

so good news i get to pull my boat to the lake tonight... lol:c:

Same thing happened to me once also. :s: