loud turbo whistle

[Jukie88]

Recently I have noticed my turbo is very very loud when on boost now I've checked all the intercollegiate piping and there doesn't seem to be any splits or rips or gaps but I've also gone from running 12 psi to 10 psi is the turbo on its way out or is it worth checking the pipes again ? Other than the noise and loss if psi it still pulls and drives well and no horrible colours coming out of the exhaust

[Danny2009]

probably just a boost leak mate put fairy liquid and water on the joins and see if it bubbles

[Jukie88]

Yeah will have another look when it's dry

[Danny2009]

Does it sound like a whistle or a whining noise?

[Jukie88]

I can only describe it as it sounds like a truck/lorry turbo spooling up

[Tom]

Does it sound like a siren?

[Jukie88]

Not quite just sounds like a fook off huge turbo spooling

[Danny2009]

boost leak id say if it sounds like a siren/hoover/washing machine ect its fecked.

[Jukie88]

Just sounds like the turbo did before just really loud I guess is the best I can describe it, I'm assuming if the trunk is shagged itl be sperting smoke and all sorts ??

[Piggy]

12psi is less then stock, now at 10psi....

sounds like a leak getting worse.

Even when my kkk was on its way out, it screamed, it was still holding 24psi strong

[Jukie88]

Thought standard they are between 10 and 14 ?

[Danny2009]

standard is 13psi or maybe 14 cant remember what one.

[Jukie88]

Was gunna say 24 is high for a standard hdi got me worried then

[Piggy]

Was gunna say 24 is high for a standard hdi got me worried then

should be around 14psi standard, but I'm saying even a knackered turbo thats screaming like a pig should hold boost....and that was my example.

[Jukie88]

Ahhhhh ok im with you will get the frot end off again when it's a little dryer and wack some fairy liquid on the joins see what's goin on

[Eeyore]

Thread moved to the correction section. The thread is for general banter and this is a HDI engine related issue.

[Jukie88]

[THUMBS UP SIGN]

[Jukie88]

Ok so it had now started to sound like a washing machine as mentioned above I'm guessing terminal ?

[Danny2009]

Yea it's f*cked in a word

[happypug]

Yea it's f*cked in a word

Hi mate. Do you let your engine idle for a couple of mins after stopping? All turbos spin a lot faster after use,when you switch off engine it`s still spinning with no oil circulating, need I say no more. So if and when you fit a new one, let it idle for two mins, thought this would help you.

[Poodle]

Lol that kind of solution is for the retards who rag it all the way to the front door then switch it off, and they tend to be beyond help. The issue isn't that the turbo is still spinning (it's driven by exhaust gas, if the engines not running its got no drive ). It's that the turbo is red hot and there's no oil flow, so any oil left in the cartridge just gets cooked. Besides, it's not Danny's turbo that's the problem anyway lol.

[Jukie88]

It's still driving and pulling fine I've lost 2psi and its not a boost leak other than that I'm just waiting for if to go tbh and replace it

[Poodle]

A word of warning, if it goes on the inlet side it will run away on the oil and blow your engine if you don't catch it sharpish.

[ADV_93]

Boost leaks would be indicated with smoke out of the exhaust (black) as the fuel isn't being burned properly.

Sounds like the turbo is on its way out, they scream like mad when they're about to break. Could be losing psi inside the turbo

[Jukie88]

Tbh I haven't checked the joins to the actual turbo so could be a boost leak there just thought of that

[Dean]

Check for boost leaks on every possible join, my GT15 still holds 1.5 bar, because i'm a idiot well past its efficiency range. Still going strong for now... touch wood.

[Jukie88]

Yeah when j can get underneath it ill have a gander :-)

[pro_steve]

Check the oulet of the turbo and any places where your turbo pipes could be rubbing. Also worth checking the inlet pipes after the MAF, are these connected properly? This would make it sound like a tractor and put you down on power if the MAF wasn't reading any air flow. Just a thought...

[Jukie88]

I haven't got a maf at the mo took it off is its failed

[JJtheHITMAN]

Lol that kind of solution is for the retards who rag it all the way to the front door then switch it off, and they tend to be beyond help. The issue isn't that the turbo is still spinning (it's driven by exhaust gas, if the engines not running its got no drive ). It's that the turbo is red hot and there's no oil flow, so any oil left in the cartridge just gets cooked. Besides, it's not Danny's turbo that's the problem anyway lol.

Lol, lol and lol again