FellowTraveler
Well-Known Member
Strange boost issue w/HX40w 18 cm2, normally starts to spool at 1.1k I have boost set to 30 psi (gauge) on a hot day it will boost a little less and on a cool day it would spike a little higher upon initial throttle to WOT there would be a very noticeable cloud of black smoke which would clear up right away.
After disconnecting vehicles batteries for a day to do some work on the Burb it was hard to start at first then started and restarts normally, however now I can only get 10 to 12 psi boost on gauge with a bellowing cloud of black smoke until I release throttle power is off and max EGT is 300 deg. f. higher than what it was before.
I checked TDCO it’s at -1.85 and there are no codes, and no matter how waste gate is adjusted from low boost to total lock down (gate locked closed) the boost never goes beyond the 10 to 12 psi boost on gauge. I did check the turbo to make sure there is not a bearing issue it’s ok and spins free for a little while after shut down and I can spin it easily by hand too.
“I’M STUMPED.”
After disconnecting vehicles batteries for a day to do some work on the Burb it was hard to start at first then started and restarts normally, however now I can only get 10 to 12 psi boost on gauge with a bellowing cloud of black smoke until I release throttle power is off and max EGT is 300 deg. f. higher than what it was before.
I checked TDCO it’s at -1.85 and there are no codes, and no matter how waste gate is adjusted from low boost to total lock down (gate locked closed) the boost never goes beyond the 10 to 12 psi boost on gauge. I did check the turbo to make sure there is not a bearing issue it’s ok and spins free for a little while after shut down and I can spin it easily by hand too.
“I’M STUMPED.”
