GolfGTIforum.co.uk
Model specific boards => Golf mk6 => Topic started by: tenrohle on 04 June 2013, 15:58
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Have had my first gti a couple months now, getting to know it and enjoying it immensely. It's a 2010 4 door.
I have a strange engine noise now that I can best describe as air escaping from somewhere within the engine.
When the engine is under load it is audible, if I don't push it too much it doesn't kick in. It's also audible if I'm coming down a hill with my foot off the accelerator or something like that.
I've tried to capture the sound of it, you can hear it best on the first rev in this video.
Anyone know what it is before I take it off to VW?
http://www.youtube.com/watch?v=J-dpAatUeRQ
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as first it sounded like you were describing boost leak, but if you off the pedal downhill, i dont think it cant be that.
Have you felt any loss in power?
And strangely, does all you heating and air con work ok?
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Heating and AC fine. No loss of power. I just drove it back to London from Devon and it ran wonderfully! Oil and water temp completely normal. Checked levels on both - fine too. MPG normal also.
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Sounds ok to me. :huh:
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On the first rev, theres a 'wheeze' of sorts that I'm finding hard to capture with my camera phone.
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On the first rev, theres a 'wheeze' of sorts that I'm finding hard to capture with my camera phone.
have you got Vag-Com, would be a good idea to get a scan if possible.....where abouts you live?
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Possibly sounds like your Diverter valve is bleeding off charged air.
When you come off the throttle the charged air is recirculated back into the intake to prevent it from surging the compressor side of the turbo.
Or it's simply just induction noise...
It's hard to tell from videos over the sound of the engine, you won't get better clarity.
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Possibly sounds like your Diverter valve is bleeding off charged air.
When you come off the throttle the charged air is recirculated back into the intake to prevent it from surging the compressor side of the turbo.
Or it's simply just induction noise...
It's hard to tell from videos over the sound of the engine, you won't get better clarity.
you would be right if it was always accelerating, but it happens when he's not acceleration....so it cant be the DV
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True - I missed that in the first post.
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My firstt thought was the diverter valve but now im thinking crankcase ventilation valve.
Take the engine cover off and see if you can hear the valve clacking.
How many miles does the car have on it?
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39k. Got it booked into Alan Day tomorrow as they're local to me but wanted some idea before I went in and they possibly tell me its 10 things it isn't. No clacking that I can hear..!
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Another video, quite a bit easier to hear. It's the noise after the initial rev. Like a rattle of sorts!!
http://www.youtube.com/watch?v=xeh_RObli-0
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yeah that sounds rattly oh right.....
Does it sound like its from underneath the car rather than the engine its self, hard to tell on the video
If so, sounds like it could be a couple of things:
you cat my have crumbled a few bits off, and they are stuck in the cat pipe.
your Turbo / downpipe bolts my be lose causing it to rattle
Best thing to do it jack it up and have listen where is comes from....
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I need a better phone as it still sounds like a fluttering dump valve to me making the turbo make that noise.
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Took it for a quick evaluation at my local dealer today. Both agreed it sounded like it was something along those lines.
Got it booked in for a diagnostic check in a couple weeks once I'm back from holidays. Getting cruise installed too.
Hopefully nothing too drastic. Car still drives perfectly otherwise which is weird..
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The dv is easy to check if you can get under the car its only held on with 3 bolts. Do a search on here it will show the location and what to check.
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Thanks Snoopy will do. Have ordered a trolley jack!
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Thanks Snoopy will do. Have ordered a trolley jack!
Make sure you use Axle stands as well :wink:.
It can be a fiddly job from underneath the car when you're lying down just for 3 bolts.
I have also read you can access the valve by taking the front offside wheel off and removing the arch liner which doesn't take too long. That way you shouldn't have to get under the car.
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Have it at a specialist at the moment. No fault codes, claims it could be my Dual Mass Fly Wheel :laugh: