Hey guys, I have an issue with my truck. I have a stock air filter system and stuff.....I was pulling a light load up a hill from a stop. It was making around 30 psi of boost then all of a sudden it seemed like the turbo got really loud....like the air filter came off or something...so i looked it all over and everything seems to be fine... Now not pulling a trailer...and not getting on it all the way, I can still get 20psi of boost but it is really loud air sound, like its coming out of the glove box. Any adeas what this could be?
-Nathan-

 

check to see if you blew a boot off the pressurized portion of the intake.

 

Do you still have the foam pad that sits under the air filter? I installed mine on top (accidentally), and the turbo sucked it through on a hard pull. The turbo was loud as heck afterwards, and the truck lost some power. But the fuel mileage was still awesome! ...anyways, that's why I have an aftermarket turbo.

 

Well, I looked at the air filter and that looks like it is all there. I did notice that when i turn off the engine...it sounds like there is a air sound coming from somewhere...im going to do the soap test tonight....I was also wondering how you guys pressurized the system from a air hose...you goes use some sort of plug over the turbo and blow air into it or something?
-Nathan-

 

check the intercooler hoses. That happened when I had my '97 12 valve. It sounded cool, but it got sluggish. Hose came off.

 

Mine sounds just like yours does...I need a rebuild pretty bad, check to see if you have any side to side play in the turbo shaft and let us know how it goes.