It feels like I have a boost lag – just doesn’t want to spool up very fast when taking off. I tried running a pressure test to see if I could find any leaks. I noticed the bleed hole on the boost elbow started whistling before the pressure gauge showed 2psi. At 10psi it was so loud that I had to tape it off in order to listen to the rest of the system (good ol’ duct tape) – even then I had to add extra pressure over the taped hole. Is this normal?

Through searching, I noticed several people mention building a gauged “plug” mounted on the turbo for performing the pressure test but nobody mentions plugging the boot at the air intake on the engine. I assumed that one of the valves would be open on the engine so the pressure would not build up. Therefore I pulled the boot off the air intake and plugged it up for testing. What is the best procedure for pressure testing?

 

PM Ben
He just went through this on his truck
https://www.dieseltruckresource.com/...ad.php?t=80997