Well This Didnt Last Long

[Reese69]

well was driving - gave the car a pedal full in 4th then 2min later in 3rd and then something went not sure was so quick thought something popped off like a line or something - from what i remember was extra air or something - hit neutral and then pulled ovver.

so checked all lines and pipes there ok, few revs fine bov works..

drive off test alittle and the sound is so different like its missing something bov seems quieter..

then i notice no waste gate sound nothing - normally its loud.. as loud as bov like a flutter.. anyway nothing and boost is only hittin 10psi, which is spring level, (tuned to 20psi)

so things are pointing to the waste gate..

its a turbosmart 50mm pro gate and been on the car for approx 1500km max half of that was on 10psi and some working the new clutch in..

what do you think.. i am thinking something has happend to the gate,

has this happened to anyone before? how did you test it/ check?

everything else with the car seems fine running normal spooling ect

[XKLABA]

look at the line for the boost controller

[Reese69]

all vac lines are fine..

when i first installed the waste gate i was only running spring psi (10) you could hear the gate release like a bov.. its not happening now..

[GTScotT]

When you say release like a bov, what do you mean exactly?

Can you describe this?

[scotty nm35]

Perhaps the diaphragm in the gate has failed?

Edit: I think that would raise the boost thinking about it. (depending how it's hooked up)

[GTScotT]

It might be sitting partly open, making the car feel sluggish and the turbo not able to build enough energy to hit target boost.

I shouldn't be making conclusive statements at this stage though.. I don't understand some of the symptoms described.

OP your thread title says it didn't last long; when was it put together and by who? If you paid a shop for this setup have you considered taking it back for them to diagnose?

Not that I don't want to help you, but before we teach you how to cook a meal you might want to take your big mac back to old Ron and ask him about the pubic hair you found on the bun. It made your wife cry, after all.

[Reese69]

YEAH it was like extra bov feeling = sorry really hard to describe happened quick..

car builds boost fine but only to 10psi which is spring pressure and can no longer here the wastegate releasing..thinking something is happend to the gate gonna pull the gate off and gonna take it to be checked

wastegate was brought through a performance shop.. arrived assembled and ready to go we welded and installed the gate tp the manifold

[Hanaldo]

when i first installed the waste gate i was only running spring psi (10) you could hear the gate release like a bov.. its not happening now..

This doesn't sound right at all...

[WMDC35]

if the gate has a 10 psi spring and holds 10 psi fine sounds like its working? what sort of boost control are you using to make 20?

[Reese69]

electronic wired to ecu....

things only changed when the car played up whilst driving..

my tuner said the gate was working fine and sounded great on the dyno.. so was working fine..

[WMDC35]

sounds like something has gone wrong with the boost controller, as for the noises dunno WTF really the gate shouldn't sound like a bov

[Reese69]

its not the same as a bov.. its ok ill just take it to a tuner

[Reese69]

so went over everything cant find any leaks nothing everything is on and tight... told my tuner he said boost leak... but car boost normal and hit 10spi easy and normally and holds (wg spring is 10psi) which to me says no leak?

like i said i could hear the wastegate open/close of water ever its called my tuner understood.. he said i wouldnt hear it as boost controller is set for 20psi so wont activate till 20 psi is hit?

my other possible theory is the electronic boost controller has failed hence why only hitting wg psi.. but if bc has failed and im hitting wg psi the the wg should be activating?

i will be hooking up a turbosmart boost T at 20 psi and try that see if that makes a difference.. any other thoughts?

[Hanaldo]

Well if your boost controller is set for 20psi and you're only hitting 10psi then you could well have a leak.

[Ben C34]

Is your waste gate plumed back? If it is you won't hear it, if it's atmo you won't miss it. I'm confused at what you are describing.

[Hanaldo]

You definitely hear gate, even when it is plumbed back. Its just not as loud as a screamer obviously. Also totally confused as to what the op is describing, I think the 'sounds like a bov' thing just confused everyone. Something has happened that has made the car go from 20psi to 10psi, which to me sounds like a leak if the wastegate isn't opening.

OP, have you tried using a leak tester? Or are you just poking your head around the engine bay to find the leak?

[Reese69]

pls forget the bov sound lol but you do understand when i say you can hear a wg? i can no longer hear that

just checked all lines make sure none have come off and all pipes are on tight..

if i did have a leak wat would be the chance of only hitting 10psi consistently in each gear?

wg is a turbo smart 50mm pro gate and is plumed back. and can normally hear it easily.

if boost T dont work i will be trying a leak test i am currently researching the smoke test - any other easy test?

what you mean by confused about "Also totally confused as to what the op is describing,"

Edited July 8, 2013 by Reese69

[Hanaldo]

Well if you have a split in a pipe that is opening up at 10psi then that'd explain it. On my car I found a leak in my intercooler plumbing that started leaking at 11psi. It was only a small leak so it didn't stop me getting to 20, but it certainly made it take longer. I found it using a leak tester I made, seals off the intake system and then by pumping compressed air into it you can easily hear where any leaks are coming from. Much cheaper than a smoke test, and pretty much fool proof.

[Reese69]

ok guess i just cant go past the coincidence of 10 psi spring and now hitting 10psi.. will do leak test tomorrow.. and see how we go

[Reese69]

little update went over every vac line then every clamp very last clamp was little loose wouldnt go tight clamp was busted.. so replaced and test drive.. all fixed

thanks for all your advice..