theminiguru Posted October 14, 2011 Posted October 14, 2011 got a squeel noise coming from the engine area after letting off the throttle? it sounds like there air ascaping from one of the hard pipes off the intercooler but unsure? has anyone come across this problem before.....could it be the turbo itself?any help is appreciated! Quote
string Posted October 14, 2011 Posted October 14, 2011 after letting off to me would be air going back through turbo. is your bov working properly. boost leaks are norm high pitched whistles when turbos spooling. attempting to spool depending on how much leaks. Quote
theminiguru Posted October 14, 2011 Author Posted October 14, 2011 after letting off to me would be air going back through turbo. is your bov working properly. boost leaks are norm high pitched whistles when turbos spooling. attempting to spool depending on how much leaks.ive had my dump valve apart and cleaned as it was an old one i had off a mate, its working fine as far as i can see! im not loosing boost so worse case senario is shaft play in the turbo otherwise i have no clue? Quote
string Posted October 14, 2011 Posted October 14, 2011 what dump value is it. I know some whistle on let off if not tight etc I'd prob block dump valve off and See it it Still does it. Video perhaps may help. Quote
H_D Posted October 14, 2011 Posted October 14, 2011 ive had my dump valve apart and cleaned as it was an old one i had off a mate, its working fine as far as i can see! im not loosing boost so worse case senario is shaft play in the turbo otherwise i have no clue? did you re-graese the piston and sleeve on the dumpvalve when cleaning it? as this can cause it to stick open and close on and off boost Quote
theminiguru Posted October 14, 2011 Author Posted October 14, 2011 did you re-graese the piston and sleeve on the dumpvalve when cleaning it? as this can cause it to stick open and close on and off boostI blocked the dump valve and the noise remains. I've narrowed it down to the hard pipe leading off the inlet manifold as it stops the noise when I pull on the pipe! Gunna take a look at the turbo and see if theres any shaft play! Quote
Gainzy Posted October 14, 2011 Posted October 14, 2011 whats your boost doing? you have a ebc or gauge? I reckon its a pipe not secure or even the inlet gasket possibly Quote
mark1991 Posted October 17, 2011 Posted October 17, 2011 i had a hole on my intercooler pipe as it was touching the gear box i think, just get it tig welded a very easy job mate (if you know someone) just a 5 min job i had no clue that there was a hole but when i got it fixd it made a big deffrence Quote
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