jakewebster Posted June 14, 2007 Share Posted June 14, 2007 Just about home today when i there was a big whoosh and lots of hissing when under under boost. It happened quite sudddenly, as in a sudden whoosh and not a leak getting bigger! I was thinking it might be the stock bov. Could it be this as i have recently gone bpu? I cant hear it when stationary, only when under load when driving. (despite severall atempts driving with the bonnet open and hanging out the window trying to locate it im still stumped!) Quote Link to comment Share on other sites More sharing options...
AndyT Posted June 14, 2007 Share Posted June 14, 2007 Not cooling bud. Would say the extra pressure created going bpu has blown one of'the of the relevant hoses, either split it or blown it off completely. Don't overly woorry. Experts will be along. Quote Link to comment Share on other sites More sharing options...
uk-rich Posted June 14, 2007 Share Posted June 14, 2007 boost pipe adrift somewhere Quote Link to comment Share on other sites More sharing options...
jakewebster Posted June 14, 2007 Author Share Posted June 14, 2007 Not cooling bud. Would say the extra pressure created going bpu has blown one of'the of the relevant hoses, either split it or blown it off completely. Don't overly woorry. Experts will be along. It sounds like a boost leak quite a big hissing under boost, dont realy want to boost fully to see if the boost drops. I cant see any hoses come off, just hoping someone might be able to pinpoint one prone to coming off! Quote Link to comment Share on other sites More sharing options...
leelbuk Posted June 14, 2007 Share Posted June 14, 2007 Check them all mate - all the larger ones coming from turbo pipes towad intercooler and fro intercooler all the way along underneath (from passenger side to drivers side) and back up into the throttle body. As soon as I went BPU, the 2nd time I boosted to 1.2bar i heard a... well best described as ,, pooooosssshhhhhhh! The pipe between the turbo pipes and intercooler had blown off. Put back together, new hose clip and hasn't come off since If you can hear hissing though, it shoulds like a pipe either hasn't fully come off and is either loose or split Quote Link to comment Share on other sites More sharing options...
Scooter Posted June 14, 2007 Share Posted June 14, 2007 what's it like with the bonnet up and you reving it by hand? Quote Link to comment Share on other sites More sharing options...
jakewebster Posted June 14, 2007 Author Share Posted June 14, 2007 no sound when revving from under the bonnet with the bonnet up. Its only under load (when boost shows on the gauge) that it hisses. Its quite a clear hiss. I just dont know which ones to start checking. All the obvious ones appear ok! Quote Link to comment Share on other sites More sharing options...
joeblitz Posted June 15, 2007 Share Posted June 15, 2007 have you an intercooler fitted if so its a pipe after coming loose ..check all the pipe work running to the injector body from the turbo Quote Link to comment Share on other sites More sharing options...
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