Jump to content
SAU Community

What Is This Hose And What Does It Do?

jUsT-dRiFt-iT

By jUsT-dRiFt-iT,
in General Maintenance

 Share

Recommended Posts

jUsT-dRiFt-iT Enthusiast

jUsT-dRiFt-iT

Posted
Posted (edited)

The last owner of my car has put an external wastegate on it, the smart guys have put it on so that it is in the way of a rubber pipe coming off the intercooler piping and they have just ignored that and let the piece of rubber pipe sit on the external wastegate (real smart lol) and now there is a reasonable sized hole melted in the pipe. Would somebody be able to tell me what the pipe is for and what it does. Would it be leaking boost? The guy that i bought the car off sais that ever since he put the wastegate on the car has been missing and/or boost cutting could this have anything to do with it? Thanx for any help.

img7017lf1.jpg

img7018ji0.jpg

img7019fp6.jpg

img7020zy1.jpg

img7021eb2.jpg

img7022qr0.jpg

Edited by jUsT-dRiFt-iT
Munkyb0y Grand Master

Munkyb0y

Posted
Posted

that will definately be leaking. i bet the idle is all over the place, and the car probably doesnt run too good on boost.

replace the hose and wrap it in some heatshielding like that alfoil looking stuff in the background.

Godzilla32 Veteran

Godzilla32

Posted
Posted (edited)

Thats the hose that gives the AAC valve (idle valve) air to bypass the throttle plate. Basically feeds air at idle, cuz without it no air would be able to enter the engine when the throttle is shut. Yes it will be leaking boost big time as it runs directly off your intake pipe. Replace it and i would hope most of your issues will be gone :D

Edited by Godzilla32
jUsT-dRiFt-iT Enthusiast

jUsT-dRiFt-iT

Posted
  • Author
Posted

Oh and also about a week ago i started the car and it ran for a couple of seconds and then just died, and then when i tried to start it again it was just turning over but wouldnt start..i sat there for a while with it turning over and giving it a bit of gas and after a while it struggled and then it started again..could this hose be something to do with that?

Jsikalias Rising Star

Jsikalias

Posted
Posted
Oh and also about a week ago i started the car and it ran for a couple of seconds and then just died, and then when i tried to start it again it was just turning over but wouldnt start..i sat there for a while with it turning over and giving it a bit of gas and after a while it struggled and then it started again..could this hose be something to do with that?

Yes it would

jUsT-dRiFt-iT Enthusiast

jUsT-dRiFt-iT

Posted
  • Author
Posted (edited)

Oh god i just like patched up the hole in the hose and went for a drive and no miss but the boost went upto 20psi and was stil climbing! What could this be? Wastegate spring?

Edited by jUsT-dRiFt-iT
Al Grand Master

Al

Posted
Posted

Take it to a dyno tuner to get it 100% checked out. Now that you have sealed the air leak, the wastegate will be set toooo high. Hopefully the turbo has not been damaged due the that massive hole in the hose, the poor thing would have been spinning off it's nuts to keep boost :D.

Sounds like the previous owner had no idea, get the whole driveline/tune checked, by a professional, ASAP!

And fit an alloy heat shield round that gate!

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • DRoc81
      R33 GTS25 NA - Stalling when vehicle is at operating temp

      By DRoc81 · Posted

      I removed the IACV, cleaned it and reinstalled.  I found a video on youtube that helped with the whole process, the guy then said the idle needed to be set, so the process was to get the vehicle up to operating temperature, unplug the TPS, set the idle screw in the IACV so the RPMs were around 600, then plug the TPS back in.  After I reinstalled the IACV, the car started (because, it was a cold start), once it warmed up, the car died, I adjusted the idle screw to see if that helped anything, it did not, I had to wait about 3-5 minutes, then the car would start back up. Only to shortly cut out, and only crank.  I loosened the TPS to see if adjusting that would do anything, and when I would rotate the sensor clockwise, there was a humming noise, but it would go away when I got the sensor in the horizontal position.  It only made the hum noise with the key on.  What do you guys think? 20250414_172604.mp4
    • Milkmun
      Magnetic Drain Plug Snapped in Half

      By Milkmun · Posted

      At least it was the ex.
    • Murray_Calavera
      Troubleshooting - motor wont turn over

      By Murray_Calavera · Posted

      Quick update.  The engine grounding strap was replaced, the engine is now happily running.  Tested the voltage drop before replacing the strap, was about 1.2ish volts down between engine to battery, chassis to battery. With the new grounding strap, pretty much no voltage drop at all. 
    • MBS206
      Mistakes were made, my R34 Story

      By MBS206 · Posted

      I was chatting with an ex SAU person who is involved in chooning euros now. He was saying the factory cars like Audi VW etc have something like 2000 tables that the ECU uses for getting everything "just right". Compare that back to any aftermarket ECU, and you'd be hard pressed to surpass 50 lookup tables. Even the Ford Barra engine has a few hundred lookup tables to run it (and they're still working some tables out too!)
    • MBS206
      Mistakes were made, my R34 Story

      By MBS206 · Posted

      Grab a temp probe, and probe each exhaust inlet runner with it sitting idling. Each one should be pretty darn close to the same temp. If you've got some reading higher or lower than the others, it's likely either air flow isn't equal, or your injectors aren't equal to each other.   The other things to check, is from the wiring changes that were made, were any earth's or grounds moved/changed.   Lastly, for the strut brace issue. It's not perfect, but can you get away with slipping a washer or two under the strut brace to raise it, and it still clean the bonnet? If you can, work out the height you need, that the motor can't torque up into, and get a spacer made for each side.
×
×
  • Create New...