AlexM Posted May 25, 2010 Share Posted May 25, 2010 I just went out for a brief test of my TT, trying to troubleshoot a misfire that's plagued me since having an AEM FIC fitted.. Full throttle, through first, just going to the high end of second and there was a strange suction noise, like something being pulled through a pipe, and a big cloud of smoke came out the rear (I don't know what colour it was, it's quite dark out). I drove the car gently for a short way, engine sounded fine, AFR/Temps looked fine, and I was only ~5mins from home.. slowly revved it up past 4.5k and it would build boost until the second turbo should come online, then there's the sound of pressure escaping and no boost.. Could this mark the end of my second turbo? (is this car cursed?) Quote Link to comment Share on other sites More sharing options...
tooquicktostop Posted May 25, 2010 Share Posted May 25, 2010 I would check intercooler pipes first, one may have popped off Quote Link to comment Share on other sites More sharing options...
AlexM Posted May 25, 2010 Author Share Posted May 25, 2010 I'll give it a look over in the morning, and cross my fingers. Quote Link to comment Share on other sites More sharing options...
bignum Posted May 25, 2010 Share Posted May 25, 2010 Sure sounds like a pipe off or split rob.if you can`t see it straight away remember how i pressure tested ians car in germany. Quote Link to comment Share on other sites More sharing options...
AlexM Posted May 25, 2010 Author Share Posted May 25, 2010 Pulling things off and blowing into them as far as I can remember? Quote Link to comment Share on other sites More sharing options...
tooquicktostop Posted May 25, 2010 Share Posted May 25, 2010 Pulling things off and blowing into them as far as I can remember? Thats Germany for you Quote Link to comment Share on other sites More sharing options...
Scott Posted May 25, 2010 Share Posted May 25, 2010 Sounds like the 2nd tubby to me I'm afraid buddy. You will be very lucky if it is something to do with a pipe IMO. If a pipe is off you won't get any/much boost from the 1st or 2nd tubby, it won't dump when the 2nd one should be coming online. I hope it isn't though, fingers crossed for you Quote Link to comment Share on other sites More sharing options...
Kirk Posted May 25, 2010 Share Posted May 25, 2010 And thats what you get for being power crazy! Id probly say you have goosed it in all fairness by the sounds of it but check your hoses first using si's bike pump and rubber glove technique Quote Link to comment Share on other sites More sharing options...
Ian C Posted May 26, 2010 Share Posted May 26, 2010 It might be the EGCV hose popping off, that'll stop the second turbo from spinning, so when the IACV opens, the boost from #1 exits backwards back into the atmosphere. Quote Link to comment Share on other sites More sharing options...
Scott Posted May 26, 2010 Share Posted May 26, 2010 It might be the EGCV hose popping off, that'll stop the second turbo from spinning, so when the IACV opens, the boost from #1 exits backwards back into the atmosphere. When my egcv was stuck the boost dumped but slowly came back up again. I was still hitting full boost high up the rev range. When my 2nd tubby popped I had next to nothing all the way. Bang and smoke doesn't sound good though, but here's hoping Quote Link to comment Share on other sites More sharing options...
Ian C Posted May 26, 2010 Share Posted May 26, 2010 When my egcv was stuck the boost dumped but slowly came back up again. I was still hitting full boost high up the rev range. When my 2nd tubby popped I had next to nothing all the way. Bang and smoke doesn't sound good though, but here's hoping This isn't stuck though, it's "not opening at all" - it stops all exhaust gas flow through #2 so the boost from #1 cheerfully backspins it and exits stage left. Quote Link to comment Share on other sites More sharing options...
Scott Posted May 26, 2010 Share Posted May 26, 2010 Ahh yes, I'm following your thinking now. Surely the 1st tubby would still make some boost though? Quote Link to comment Share on other sites More sharing options...
Ian C Posted May 26, 2010 Share Posted May 26, 2010 "slowly revved it up past 4.5k and it would build boost until the second turbo should come online" Quote Link to comment Share on other sites More sharing options...
Scott Posted May 26, 2010 Share Posted May 26, 2010 "slowly revved it up past 4.5k and it would build boost until the second turbo should come online" Ok ok Quote Link to comment Share on other sites More sharing options...
AlexM Posted May 26, 2010 Author Share Posted May 26, 2010 Results are in.. Quote Link to comment Share on other sites More sharing options...
Ian C Posted May 26, 2010 Share Posted May 26, 2010 Of course, Scott may be right as well Just saying, like. Quote Link to comment Share on other sites More sharing options...
AlexM Posted May 26, 2010 Author Share Posted May 26, 2010 I wish he wasn't! I had picked up some hopes that it was only a pipe. Not sure on my best option now, Chris recommended some new turbos, a rebuild is likely to be quite pricey, and I'm not sure how much extra a mild single build would cost.. Quote Link to comment Share on other sites More sharing options...
Scott Posted May 26, 2010 Share Posted May 26, 2010 That is exactly what my 2nd tubby looked like, sorry to see it bud Quote Link to comment Share on other sites More sharing options...
bignum Posted May 26, 2010 Share Posted May 26, 2010 Oh bumhole thats not good, you sure got that stripped down quick, are there no 2nd hand units around atm? Quote Link to comment Share on other sites More sharing options...
AlexM Posted May 26, 2010 Author Share Posted May 26, 2010 Lee is asking about a set for me, waiting to see what response he gets.. there must be some around. Quote Link to comment Share on other sites More sharing options...
Scott Posted May 26, 2010 Share Posted May 26, 2010 I've got a set in the garage if you are interested? Quote Link to comment Share on other sites More sharing options...
AlexM Posted May 26, 2010 Author Share Posted May 26, 2010 Sure Scott, what condition are they in and how much? Quote Link to comment Share on other sites More sharing options...
Scott Posted May 26, 2010 Share Posted May 26, 2010 Sure Scott, what condition are they in and how much? I haven't had a proper look at them yet mate. I'll give them a proper going over tomorrow when I get in from work and get some pics etc for you. That ok? Quote Link to comment Share on other sites More sharing options...
AlexM Posted May 26, 2010 Author Share Posted May 26, 2010 Yeah sure, if you could let me know where they originate from too and how long they've been sat? Quote Link to comment Share on other sites More sharing options...
Scott Posted May 26, 2010 Share Posted May 26, 2010 Came off an Auto TT. Currently has 100k on it with the conversion being done at 70k kms. They were taken off in November. Swapped with another set because the 2nd tubby was thought to be fooked but it ended up being the pressure tank causing all the trouble. Sitting in sozzle in plastic bags in the garage since. I'll check the play/condition properly tomorrow and get some pics for you. Cheers Quote Link to comment Share on other sites More sharing options...
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