suprattgaz Posted June 15, 2008 Share Posted June 15, 2008 Came onto dual carriageway, gave it some and it red lined then that was it, no more second turbo boost. No bang, no smoke, no horrible noises just severe lack of boost. First turbo whistles and is acting normally. It's like the car isn't letting it switch over to the second turbo. When it should normally do that short drop in power before the second turbo kicks in it just doesn't do it at all. And that metallic noise when you let off the power (like a valve or something shutting/moving) isn't happening either. Checked all piping, can't find anything obvious off. The boost gauge shows negative boost as normal on tick-over, but struggles to go positive. Has this happened to anyone else? What could it be? Quote Link to comment Share on other sites More sharing options...
tomgeer Posted June 15, 2008 Share Posted June 15, 2008 check your vsv's and actuators are working, they some times stick, if you do a search you will find loads of information on it. Quote Link to comment Share on other sites More sharing options...
miko_supra Posted June 15, 2008 Share Posted June 15, 2008 mine has done this a couple of times in the past. Then it went away...put it into ttc mode to check the second turbo is working fine Quote Link to comment Share on other sites More sharing options...
suprattgaz Posted June 15, 2008 Author Share Posted June 15, 2008 Thanks Guys, good tips all round. Don't feel so gutted now if it is just a stuck valve. Hmmm, sounds like a PITA to find where the problem valve/actuator is. Is there a tried and tested method of systematically checking bits n peices? Like which valve first? Which is easiest??? Which is the normal one that goes? Quote Link to comment Share on other sites More sharing options...
AndrewOW Posted June 15, 2008 Share Posted June 15, 2008 Mine's done exactly that today. Turbo 1 spools up lovely, then at the usual 3800-4000k revs nothing's happening. Turbo 1 boost fades away, and there's nothing there after that. I have only been pootling around recently to save fuel, so hopefully its only one of these 'simple' checks to do. Disconcerting though! Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted June 15, 2008 Share Posted June 15, 2008 ha ha join the club mate, I have this problem too. Once some one replies to my "overhaul the sequential system" thread take a look as it might be of interest Quote Link to comment Share on other sites More sharing options...
suprattgaz Posted June 15, 2008 Author Share Posted June 15, 2008 Is weird though, it has been fine for 4 years now, no problems engine wise at all. Then this today, as you say disconcerting It always smacks me with ££££££ as soon as I think something is going wrong with these cars. Lucky I love the damn thing so much or I would have given up chasing these little gremlins it has every now and again (brakes, diff.....it goes on). Why do they always do it when you have no floating cash as well, mortage goes up this month too. Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted June 16, 2008 Share Posted June 16, 2008 (edited) Is weird though, it has been fine for 4 years now, no problems engine wise at all. Then this today, as you say disconcerting It always smacks me with ££££££ as soon as I think something is going wrong with these cars. Lucky I love the damn thing so much or I would have given up chasing these little gremlins it has every now and again (brakes, diff.....it goes on). Why do they always do it when you have no floating cash as well, mortage goes up this month too. very weird mate...mine too...had it for 5years with flawless running and only when I changed the HKS bov back to stock and this has happened....annoying thing is, it was fine with the stock recirc for a few weeks and has now gone like this. And to make matters worse a can of WD40 exploded i the boot over the weekend as well and all the bitcumin based bits that support the spare wheel have all rejuvinated so ive got black sticky tar all over the place now.....it never rains eh Edited June 16, 2008 by mikeyb10supra (see edit history) Quote Link to comment Share on other sites More sharing options...
AndrewOW Posted June 16, 2008 Share Posted June 16, 2008 Is weird though, it has been fine for 4 years now, no problems engine wise at all. Then this today, as you say disconcerting It always smacks me with ££££££ as soon as I think something is going wrong with these cars. Lucky I love the damn thing so much or I would have given up chasing these little gremlins it has every now and again (brakes, diff.....it goes on). Why do they always do it when you have no floating cash as well, mortage goes up this month too. Don't go saying things like that! I'm running things at the hilt already, and if something expensive happens to the car, I'll have to garage it and save up to fix it. Goodness gracious me! I'm hopefully getting it looked at this week, so will report back. Quote Link to comment Share on other sites More sharing options...
suprattgaz Posted June 16, 2008 Author Share Posted June 16, 2008 My exhaust note has changed too. Like when you have been on boost, and can hold it at a "noisier" point before that valve makes the metallic shutting nosie. Is this rinigng any bells, is there a certain valve or actuator i should be looking at? Quote Link to comment Share on other sites More sharing options...
AlexJames Posted June 16, 2008 Share Posted June 16, 2008 Mine did this too.. was a small split in the hose going to the air actuator.... funnly enough the in car heater stopped working too until I fixed it! Quote Link to comment Share on other sites More sharing options...
Guest joeylicous Posted June 16, 2008 Share Posted June 16, 2008 my second turbo smoke's is that broken than Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted June 16, 2008 Share Posted June 16, 2008 my second turbo smoke's is that broken than no Quote Link to comment Share on other sites More sharing options...
Guest joeylicous Posted June 16, 2008 Share Posted June 16, 2008 whats then the problem i see smoke by the second turbo and he get's olie Quote Link to comment Share on other sites More sharing options...
suprattgaz Posted June 16, 2008 Author Share Posted June 16, 2008 Mine did this too.. was a small split in the hose going to the air actuator.... funnly enough the in car heater stopped working too until I fixed it! Can you give me a clue as to where to start looking then please? which actuator and which pipe???? Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted June 16, 2008 Share Posted June 16, 2008 Can you give me a clue as to where to start looking then please? which actuator and which pipe???? first port of call for me is the IAVC Quote Link to comment Share on other sites More sharing options...
suprattgaz Posted June 16, 2008 Author Share Posted June 16, 2008 (edited) For you guys asking, see this thread. Helps. http://www.mkivsupra.net/vbb/showthread.php?t=27904&highlight=IAVC Edited June 16, 2008 by suprattgaz (see edit history) Quote Link to comment Share on other sites More sharing options...
suprattgaz Posted June 16, 2008 Author Share Posted June 16, 2008 Just took it out again to see if I can work out what the problem is. It now, when giving it some, pours white smoke out. Then (I think) either white, or bluey white on tick-over. First seems ok, and the pressure still struggles to get any more than 0.2 or 0.3 bar. Looking at the link it says it is the exhaust valve (EGCV), but now it is smoking???? Has the turbo given up the ghost???? Quote Link to comment Share on other sites More sharing options...
wile e coyote Posted June 16, 2008 Share Posted June 16, 2008 Hope you get to the bottom of this gaz Quote Link to comment Share on other sites More sharing options...
tomgeer Posted June 16, 2008 Share Posted June 16, 2008 Gaz have you seen this: http://www.max-boost.co.uk/max-boost/supra/turbo.htm Helped me with my checks Quote Link to comment Share on other sites More sharing options...
suprattgaz Posted June 16, 2008 Author Share Posted June 16, 2008 Yeah, but I am now worried about the white smoke - why would it suddenly start to do that? does it go white if over/under fuelling?? Quote Link to comment Share on other sites More sharing options...
Jim_1979 Posted June 16, 2008 Share Posted June 16, 2008 I would say look near the turbos, left hand side, near the front of the car. Near where the 1st cat/downpipe connects. Also up the back of the engine area. Left of the middle of the bay. Sorry, I have no pics. Look about mate and you'll easily find a few actuators etc. Quote Link to comment Share on other sites More sharing options...
Angarak Posted June 16, 2008 Share Posted June 16, 2008 Check your intercooler pipes to make sure one hasnt popped of: (see #6) http://www.mkivsupra.net/vbb/showthread.php?t=21186&highlight=white+smoke+intercooler Check your EGBV pipes at the back of the engine (theyre a bugger to access), I had a split in one of my EGBV pipes and had 2nd turbo problems until I replace them: http://www.mkivsupra.net/vbb/showthread.php?t=65384&highlight=egbv Quote Link to comment Share on other sites More sharing options...
suprattgaz Posted June 17, 2008 Author Share Posted June 17, 2008 I have had the intercooler pipe blow off before, it isn't that. It is different, and why the white smoke? i drove it for about a minute just to get a feel for what it was doing, is that over fuelling or has the turbo blown it's seals??? Quote Link to comment Share on other sites More sharing options...
suprattgaz Posted June 17, 2008 Author Share Posted June 17, 2008 No smoke tonight, just running very rich by the smell. Going for Angaraks EBGV pipes. If not hybrid or single. Might be handy working for what used to be called Normaliar GARRETT!!! Quote Link to comment Share on other sites More sharing options...
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