new turbo yet no boost

[91integraturbo]

[u]Hello

Hey

How much boost should I have at idle? I've been having an odd problem. I recently installed a t3/t4 turbo and at first I had boost. I didnt have a gauge installed yet but air was blowing from nearly all intake vacuum lines. Then the next day I put a boost gauge in and it read 0 boost and I have no air out the intake vacuum lines. If you put the motor under load though you can plainly hear the turbo spool up. Before though you couldn't hear it spooling but a lot of air was coming out of the intake. I didn't try putting it under load when I felt air coming from the intake originally. The gauge I purchased also came with oil type plumbing so I put it on the turbo where the waste gate is with a T fitting. If you're just idleing and you hold the intercooler rubber piping you can feel that it isnt boosting but if you then press the gas to 6000 rpm you still don't feel it expand (you also don't hear it spool, but under load you do hear it spool). A matter a fact while idleing (I didn't try it while reving) you can stop the blade on the intake side of the turbo easily with your finger. It's like the exhaust isn't strong enough to spin the turbine or maybe all the exhaust isnt being forced through the turbine. I've ordered another turbo and didnt want to put it in until I could figure out what went wrong with the first one. Anyone have any ideas let me know I can also answer any other questions that may help you understand what might have happened. the only thing I can think of is possibly, I did have the pcv hose blocked off for the initial start up(I didnt realize it was plugged up had a collapsed hose) and maybe the postive pressure in the crank case prevented the turbo from draining oil correctly. It was also smoking pretty bad and when I took the turbo back off and took the downpipe down there was a lot of thick sticky oil around the turbine. while I had the turbo off I cleaned all that up and now it don't smoke at all but still no boost. Neither sides of the turbo leak oil or anything. It still spins super easily as well. You can spin it with your finger and it keeps spinning for another 2 seconds or more. please any ideas would be super helpful.

[speed=$]

For starters, you won't have boost at idle, or not enough to really register on a gauge. Second , your going to want to use a high grade synthetic oil in a turbo application if you want it to last. Unless your trying to win a 'HERES YOUR SIGN' award you shouldn't be sticking your fingers in the turbo to see if you can stop the spinning disc.

[91integraturbo]

Hey

Thanks for letting me know about the amount of boost at idle. One more question though was it some sort of fluke that I had a lot of boost coming from the intake vacuum lines at idle originally? At idle you could hold your hand about 6 inches from the port that the pcv originally went to and you could feel boost. Not only that port but any port I unplugged to feel for boost I could feel it. I recently put it half way up the ramps and pulled the e-brake on the ramps so I could put it under load. At idle it has about 18 to 19 vacuum on gauge and once I put it under load it goes to 0 which makes sense since you are opening the throttle which equalizes pressure but gauge never registers boost no matter how much load I put it under. Stays at 0 boost but you can hear the turbo spooling up really loud. Any other ideas would be helpful thanks

[CapnToll]

Why don't you just take it for a short drive and see if it's fast at half throttle? Or is not even close to being tuned enough to even risk that? If you think it's boosting, you should probably swap out another gauge before changing the turbo.

If it's running okay, just give it a bit of gas on the street and see if it's fast....should be pretty easy to tell if you are boosting above 0 psi. If it ACTUALLY isn't boosting, it could be anything from a faulty wastegate, to your mechanical boost controller (if you have one).