Strange Noise on Lift off

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Weyro

Member +
Today after doing a really hard second gear pull, the car has started making a strange noise when i nail it and lift off.
It Dumps and makes a quick 'w-aww' creaking sound.

Any ideas whats up?
 
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Weyro

Member +
I stay down Merchant City, near the center. Its a hard noise to explain lol. Like a kind of low pitch squeak/groan

Sitting in the car park searching for something that might be loose, gonna be here all night :(
 
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grum-glanza

Member +
you might of broke the dump valve my brother done that on his subaru a few years ago only running a bar of boost swap one over and see hopefully thats all it is
 
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Weyro

Member +
ok my amazing linguistic skills have narrowed it down to a quick 'w-aww' sound

Chris_GlanzaV98 said:
Emmm tryin to think mate if u want over the weekend ill pop down with my mate im only in baillieston
Click to expand...

that would be great, but im going to be away for the weekend, is there any chance you are free tomorrow night, i could come to you?

grum-glanza said:
you might of broke the dump valve my brother done that on his subaru a few years ago only running a bar of boost swap one over and see hopefully thats all it is
Click to expand...

ill try swapping the dump valve. It seems to be operating fine though, as i can hear it at the same time as the strange noise
 
s880kid

s880kid

Fresh Recruit
Does it make a noise when you lift off when your not on boost? Mine makes a weird noise too,I have a feeling it's something to do with the throttle cable.
 
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Chris_GlanzaV98

Chris_GlanzaV98

Member +
Weyro said:
ok my amazing linguistic skills have narrowed it down to a quick 'w-aww' sound



that would be great, but im going to be away for the weekend, is there any chance you are free tomorrow night, i could come to you?



ill try swapping the dump valve. It seems to be operating fine though, as i can hear it at the same time as the strange noise
Click to expand...

im out at night with the missus tonight mate...if you atleast get a vid up we will take it from there if not we will work out a day to have a look at it
 
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Weyro

Member +
ok ill get a vid up asap.

Its definitely not chatter, as thats what it used to sound like, when it was working normal

Now something is definitely amiss, as its a strange groan kind of noise
 
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Weyro

Member +
ok ive put on a dump valve blanking bung, it now makes a "to-to-to" type chatter at low revs, and a loud "choo!" at high revs, when letting off

does this amazing description sound about right?

also the weird noise is either gone, or hidden by the loud chatter
 
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