normda Member 30 Member For: 16y 10m 26d Gender: Male Posted 06/04/10 02:48 AM Share Posted 06/04/10 02:48 AM Hey guys I have had my ba xr6t serviced recently and apparently the wastegate isn't operating correctly :Swhen I get around full boost I can hear a sort of rattling/chattering around the turbo area, I think it's the bov that is opening and closing very slightly. Is this a big problem?? Does this just mean that there is slight boost leak? Link to comment Share on other sites More sharing options...
2jz929 Member 23 Member For: 15y 11m 4d Gender: Male Location: Central QLD Posted 06/04/10 03:08 AM Share Posted 06/04/10 03:08 AM Is it a wastegate issue or a BOV issue? There is no reason for a BOV to be flapping open as they are boost referenced. Specs on the car are often helpful, is it stocko or tuned? Maybe the boost solenoid isn't working correctly? Link to comment Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 17y 9m 15d Gender: Male Location: SW Sydney Posted 06/04/10 03:58 AM Share Posted 06/04/10 03:58 AM Check if the flapper is catching on the dump pipe, sometimes it has been seen that the larger flapper gets caught as it opens fully Link to comment Share on other sites More sharing options...
normda Member 30 Member For: 16y 10m 26d Gender: Male Posted 06/04/10 08:00 AM Author Share Posted 06/04/10 08:00 AM It's pretty close to stock. Just had a mild tune, new intercooler piping, cold air and bov. The rattling noise isn't a bearing going or sumthing similar??What kind of issues would a wastegate not working properly cause? Link to comment Share on other sites More sharing options...
Mrs Jeturbo Bob the Freaking Builder Donating Members 10,810 Member For: 15y 2m 9d Gender: Female Location: SA Posted 06/04/10 08:05 AM Share Posted 06/04/10 08:05 AM problem with your actuator maybe???.....if the wastegate is stuck open you will lose boost, closed will over boost ... Link to comment Share on other sites More sharing options...
normda Member 30 Member For: 16y 10m 26d Gender: Male Posted 06/04/10 08:18 AM Author Share Posted 06/04/10 08:18 AM ive had my suspicions about the actuator cos the guy I bought my car off said he had it changed to a 12psi actuator...but then when I had it tuned they said it was still the stock one!! should I get this looked at asap? I dont want to do any damage Link to comment Share on other sites More sharing options...
BensXR6T Member 478 Member For: 15y 10m 15d Gender: Male Location: Burpengary QLD Posted 06/04/10 08:34 AM Share Posted 06/04/10 08:34 AM Can you take an audio sample of the noise? Might make it a bit easier to diagnose.If the previous owner put a 12psi actuator in there, did it already have a tune to match? cos it would have been throwing codes and going into limp mode if it was still standard.Have you checked all your piping is tight? and also might want to rip the filter on the turbo oil feed line out and replace it incase it's blocked very bad chattering noise if that's the case. Link to comment Share on other sites More sharing options...
Wenier Donating Members 1,736 Member For: 14y 10m 4d Gender: Male Location: Christchurch, New Zealand Posted 06/04/10 09:30 AM Share Posted 06/04/10 09:30 AM I wouldnt expect to hear a chattering or rattling noise from the wastegate flapper even if it were to touch the dump pipe as when fully open it should be pushing hard against it which would prevent the noise. Might be something else, is there any loose heat sheild or does it touch something that it could rattle against. Link to comment Share on other sites More sharing options...
normda Member 30 Member For: 16y 10m 26d Gender: Male Posted 06/04/10 01:19 PM Author Share Posted 06/04/10 01:19 PM Actually now that u mention it, I tightened the turbo bolts a few weeks ago and I lost one of the screws for the turbo heatshield. That could be a possibility. I'll try and get a audio sample but might be a bit hard because the rattle sound might not come through loud enough over the sound of the turbo spool and exhaust. It only happens when the car is under load. Link to comment Share on other sites More sharing options...
normda Member 30 Member For: 16y 10m 26d Gender: Male Posted 07/04/10 08:54 AM Author Share Posted 07/04/10 08:54 AM just took it down to the mechanics today and he said he couldnt find anything wrong with it, and the only two things he could see was either the rattling heatshield or...the bov fluttering slightly during boost! Link to comment Share on other sites More sharing options...
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