Vagnum Posted June 27, 2006 Share Posted June 27, 2006 driving on the motor way chasing a mate got to about 120 and then lost power! no lights on, pulled over checked pipes to my fmic all ok checked vacum pipes looked ok it's hard to builded up the revs and feels flat i can hear the 1st turbo spining but the car is just not going checked the fault memory 2day no faults removed air filter still the same! it feels really flat when driving but on tick over it's o.k anyone have any ideas! Link to comment Share on other sites More sharing options...
wkdtime Posted June 27, 2006 Share Posted June 27, 2006 Have you got a boost gauge? Need to know what boost your hitting, are you stock or BPU? Link to comment Share on other sites More sharing options...
Vagnum Posted June 27, 2006 Author Share Posted June 27, 2006 Have you got a boost gauge? Need to know what boost your hitting, are you stock or BPU? no boost gauge! 2nd decat, mines chip, air filter, fmic also noticed my hks bolw off valve suck's in air when reving? Link to comment Share on other sites More sharing options...
wkdtime Posted June 27, 2006 Share Posted June 27, 2006 Mate you have no second decat pipe and have no idea what boost your running? you need to get a boost gauge in there somewhere and then the guys here can give you a better idea what could be wrong with your car. Link to comment Share on other sites More sharing options...
Vagnum Posted June 27, 2006 Author Share Posted June 27, 2006 what do you mean i have no 2nd decat? last time the boost got checked was with thor it was 1.1bar! it feels like something is holding it back like a blockage in the cat? just wondering if anyone has had a similair fault! Link to comment Share on other sites More sharing options...
Jake Posted June 27, 2006 Share Posted June 27, 2006 If you had a boost gauge you would be able to tell if the car is still making boost or not. It sounds like no boost but who knows? I would check your intercooler piping again. Link to comment Share on other sites More sharing options...
wkdtime Posted June 27, 2006 Share Posted June 27, 2006 G.W what im trying to say, with out knowing how much boost your hitting now i.e, you may be boosting fine and hence people can advise correctly, or you may be not boosting corretly and again we can start to look in the right direction. Its the first place to start when the car feels slugish, flatspots etc, so until you can get one fitted its going to make it difficult to diagnose what the possible problem could be, Link to comment Share on other sites More sharing options...
Vagnum Posted June 27, 2006 Author Share Posted June 27, 2006 got the boost gauge from work and tested it in a dig gauge for vw's it wasn't reading any boost just -0.182 bar then at higher revs -0.523 bar so i'm boosting but can hear the first turbo spinning ??????? i'll have to get the car in the air and recheck the boost pipe but they do look and feel ok! Link to comment Share on other sites More sharing options...
wkdtime Posted June 27, 2006 Share Posted June 27, 2006 Are you saying you took it for a sprint and you saw max boost at 0.5 bar? if so do you know at what revs you saw max boost? Link to comment Share on other sites More sharing options...
Vagnum Posted June 28, 2006 Author Share Posted June 28, 2006 no there's no boost it's reading in - like when on vacum the peak was -0.5 at about 4500-5000 rpm and -0.1 was at about 2000-3000????? i was thinking maybe the VSV valve if thats what it's called is not operating? Link to comment Share on other sites More sharing options...
Lucifer Posted June 28, 2006 Share Posted June 28, 2006 HKS SSQV's do not suck in air when revved. If your piston is broken in teh SSQV it may be expelling air when teh intake is pressurised. Cant say Ive ever seen that before though! Link to comment Share on other sites More sharing options...
Guest Bijal Posted June 28, 2006 Share Posted June 28, 2006 HKS SSQV's do not suck in air when revved. If your piston is broken in teh SSQV it may be expelling air when teh intake is pressurised. Cant say Ive ever seen that before though! agreed there, thats a very rare occurance, you have 2 likely problems, 1 of the turbo exhaust housing might be cracked (quite extreme but i've seen this more than once) Or your intercooler piping is for sure at fault with a joint loose? are you 100% sure you checked the ENTIRE intercooler piping and couplings to make sure they are tight and not loose or have a hole in a coupling somewhere? even in the hard to reach places it might "look" ok but might be loose? regards bijal Link to comment Share on other sites More sharing options...
Guest Bijal Posted June 28, 2006 Share Posted June 28, 2006 oh, another question for ya, is your car running rich by any chance? common symtom is black smoke from exhaust when trying to floor it. if so then you have popped a vacuum line somewhere, hence you are hearing some kind of air leak? bijal Link to comment Share on other sites More sharing options...
Vagnum Posted June 28, 2006 Author Share Posted June 28, 2006 no got no smoke i'll take the boost piping back off at lunch and give it a good check. as for the ssqv if i rev it from under the bonnet it open's a bit suck's in air then when i come off it dump's ??????? Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 28, 2006 Share Posted June 28, 2006 A turbo to throttle body pipe is off, look again, or the I/C has burst. Link to comment Share on other sites More sharing options...
Guest Bijal Posted June 28, 2006 Share Posted June 28, 2006 no got no smoke i'll take the boost piping back off at lunch and give it a good check. as for the ssqv if i rev it from under the bonnet it open's a bit suck's in air then when i come off it dump's ??????? are you 100% sure you are not mistaking the sucking in of air being the intake/induction kit? bijal Link to comment Share on other sites More sharing options...
spidermonkey Posted June 28, 2006 Share Posted June 28, 2006 i had a bid loss of power as you have described i had blown the bottom intercooler pipe off, it still looked like it was attached until i moved it you need to re check you piping Link to comment Share on other sites More sharing options...
Guest Bijal Posted June 28, 2006 Share Posted June 28, 2006 i had a bid loss of power as you have described i had blown the bottom intercooler pipe off, it still looked like it was attached until i moved it you need to re check you piping very common mistake that, easily un-noticeable. bijal Link to comment Share on other sites More sharing options...
Vagnum Posted June 28, 2006 Author Share Posted June 28, 2006 are you 100% sure you are not mistaking the sucking in of air being the intake/induction kit? bijal no no i'm sure! my ssqv is on my hks hard pipe next to the throttle body n/s of engine if i rev the car from the throttle body and put my hand if front of the ssqv it suck's in air and opens about .5cm then when i come off it open's fully and let's the pressure back out! Link to comment Share on other sites More sharing options...
Guest Bijal Posted June 28, 2006 Share Posted June 28, 2006 no no i'm sure! my ssqv is on my hks hard pipe next to the throttle body n/s of engine if i rev the car from the throttle body and put my hand if front of the ssqv it suck's in air and opens about .5cm then when i come off it open's fully and let's the pressure back out! better description there. in that case remove the vacuum line attached to the hks ssqv and block that vacuum line off and give the car a boosting. if it continues then theres a fault else where. if the car drives fine then its your bov. good luck. bijal Link to comment Share on other sites More sharing options...
Vagnum Posted June 28, 2006 Author Share Posted June 28, 2006 tried that yesterday and it still opens! Link to comment Share on other sites More sharing options...
Guest Bijal Posted June 28, 2006 Share Posted June 28, 2006 seriously a strange one. you cant even remove the hks ssqv easily without the right tool cos i think its circliped on? if you have had it welded to the intercooler piping kit? and then you'ed have to find something to block the hole with temperarly? Link to comment Share on other sites More sharing options...
Vagnum Posted June 28, 2006 Author Share Posted June 28, 2006 ya it's welded to the intercooler pipe, going to need a new one just went to twist it to remove the clip and the base broke! o well one way to see if it's that. whats a good ssqv then? just vacuum tested the ssqv and it not opening???? Link to comment Share on other sites More sharing options...
Ian C Posted June 28, 2006 Share Posted June 28, 2006 oh, another question for ya, is your car running rich by any chance? common symtom is black smoke from exhaust when trying to floor it. if so then you have popped a vacuum line somewhere, hence you are hearing some kind of air leak? bijal That's not a valid test on a MAP based system unfortunately. It'll be fuelling correctly for whatever air reaches the plenum. In this case, not much. -Ian Link to comment Share on other sites More sharing options...
Guest Bijal Posted June 28, 2006 Share Posted June 28, 2006 That's not a valid test on a MAP based system unfortunately. It'll be fuelling correctly for whatever air reaches the plenum. In this case, not much. -Ian I said "vacuum line" not the intake plenum, if the vacuum pipe in question is the one shared (T) to the FPR that has popped off then it will cause over fueling. this is very common to pop off at high speeds and boost pressure. bijal Link to comment Share on other sites More sharing options...
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