Duffman Posted May 19, 2009 Share Posted May 19, 2009 Think I may have a leak somewhere as car makes a high pitched noise when under boost. Car is running BPU at the moment with a 1.2bar RR. It hits about 0.9 bar at full boost. Would a leak cause a significant loss in boost? Quote Link to comment Share on other sites More sharing options...
Stonkin Posted May 19, 2009 Share Posted May 19, 2009 Yes. Check all hoses for splits and make sure all the clamps are tight and making a good seal. Mine did this recently and was a split hose coming from the fmic edit - just seen other thread Quote Link to comment Share on other sites More sharing options...
Duffman Posted May 19, 2009 Author Share Posted May 19, 2009 Yes. Check all hoses for splits and make sure all the clamps are tight and making a good seal. Mine did this recently and was a split hose coming from the fmic edit - just seen other thread Have tried just about everything I can think off but will have another look at intercooler piping Quote Link to comment Share on other sites More sharing options...
Duffman Posted July 21, 2009 Author Share Posted July 21, 2009 Still no joy with this Quote Link to comment Share on other sites More sharing options...
Gaz6002 Posted July 21, 2009 Share Posted July 21, 2009 Do you have a boost gauge? If so what's it saying? Quote Link to comment Share on other sites More sharing options...
Duffman Posted July 21, 2009 Author Share Posted July 21, 2009 Do you have a boost gauge? If so what's it saying? Have a memory one and the highest it hits is 0.85 bar...thats BPU with a 1.2 bar RR fitted Quote Link to comment Share on other sites More sharing options...
Gaz6002 Posted July 21, 2009 Share Posted July 21, 2009 Have a memory one and the highest it hits is 0.85 bar...thats BPU with a 1.2 bar RR fitted And it hit 1.2 bar before? Turbo problem? Quote Link to comment Share on other sites More sharing options...
Duffman Posted July 21, 2009 Author Share Posted July 21, 2009 And it hit 1.2 bar before? Turbo problem? It was boosting to 1 bar before...then had it in TTC and was spiking at 1.3 bar so put back to normal. Don't think it's a turbo problem though. The noise makes me think it's a leak somewhere Quote Link to comment Share on other sites More sharing options...
Gaz6002 Posted July 21, 2009 Share Posted July 21, 2009 It was boosting to 1 bar before...then had it in TTC and was spiking at 1.3 bar so put back to normal. Don't think it's a turbo problem though. The noise makes me think it's a leak somewhere I'd be checking all the vac pipes then fella Quote Link to comment Share on other sites More sharing options...
Duffman Posted July 21, 2009 Author Share Posted July 21, 2009 I'd be checking all the vac pipes then fella I literally have checked them 10 times over and no splits have been found...beginning to think it could be a dodgy VSV...maybe not opening shutting correctly Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 21, 2009 Share Posted July 21, 2009 The number of cars I get in where someone says they have checked all the hoses beween the turbo and the throttle body and they are perfect. An hour later I have a split hose in my hand, or a clip has slipped or been badly fitted. REMOVE all the hoses and check them inside and out, and under tension and compression. It may be something else but I'd bet you haven't removed them all. It's the only proper way unless you make the kit to pressurise the system with an air line, or you listen under load on a rolling road with a hose in your lug `ole.. Quote Link to comment Share on other sites More sharing options...
Duffman Posted July 21, 2009 Author Share Posted July 21, 2009 The number of cars I get in where someone says they have checked all the hoses beween the turbo and the throttle body and they are perfect. An hour later I have a split hose in my hand, or a clip has slipped or been badly fitted. REMOVE all the hoses and check them inside and out, and under tension and compression. It may be something else but I'd bet you haven't removed them all. It's the only proper way unless you make the kit to pressurise the system with an air line, or you listen under load on a rolling road with a hose in your lug `ole.. I have pressurised the system before when checking if it was one of my VSV that were buggered or if it was the turbo that was cooked...turned out it was the 2nd turbo. Is this the same way i'd pressurise then system...by simplyng any hose and using an air line...or is there another way? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 21, 2009 Share Posted July 21, 2009 (edited) No, no, that won't work, you need to make a bung for the throttle body hose, and a bung with a Schrader valve fitting for the hose off the turbos and pressurise the I/C and all other hoses to and from it at about 1.3 bar. Edited July 22, 2009 by Chris Wilson (see edit history) Quote Link to comment Share on other sites More sharing options...
Duffman Posted July 22, 2009 Author Share Posted July 22, 2009 No, no, that won't work, you need to make a bung for the throttle body hose, and a bung with a Schraeder valve fitting for the hose off the turbos and pressurise the I/C and all other hoses to and from it at about 1.3 bar. Will any garage be able to do this or could you perhaps recommend one in Scotland if you know one. Also whats a Schraeder valve? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 22, 2009 Share Posted July 22, 2009 They'd have to turn up some bungs from plastic or metal, and drill and tap one for the Schrader valve. http://en.wikipedia.org/wiki/Schrader_valve I misspelt Schrader by adding an extra "e", sorry. Quote Link to comment Share on other sites More sharing options...
Duffman Posted July 22, 2009 Author Share Posted July 22, 2009 They'd have to turn up some bungs from plastic or metal, and drill and tap one for the Schrader valve. http://en.wikipedia.org/wiki/Schrader_valve I misspelt Schrader by adding an extra "e", sorry. I'm going to strip all hoses off again and check them....there MUST be one i've missed. Would I be right in saying even the tinyest of holes cause cause the loss of boost? Also could this cause the high pitched noise i'm hearing when boost comes online? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 22, 2009 Share Posted July 22, 2009 A pinhole won't matter, a slit a half inch long would, definitely! Quote Link to comment Share on other sites More sharing options...
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