The-Plethora Posted March 28, 2011 Share Posted March 28, 2011 Just when you get most things sorted something else bites your ass... I have done quite a few miles recently and all has been well, but earlier I put my foot down for slight boost but was getting little power and air release. I pulled over and thought this would be a popped pipe, I am pretty careful and each pipe is held on both ends with ties and I only recenly replaced every one I could get to with new ones. Took the car out again, put my foot down and all was fine, if I feather the throttle in say 1 time out of 5 I get air release (is that the term). So I am fairly sure due to it's random nature when I give it slight boost (doesn't happen on full) that it is the BOV. Is there any maintenance I can do on these? I understand they are pretty delicate, would a blast of WD40 do the trick or is that not wise? Could the spring be knackered or the seal? (am I getting too technical ) Rubbish pic but it's this one... By the way it sounds awesome but I don't go very fast Cheers for help Quote Link to comment Share on other sites More sharing options...
Nic Posted March 28, 2011 Share Posted March 28, 2011 Is it a genuine HKS SSQV BOV? The valve is a pull type so shouldn't leak under pressure, the only reason it would leak is if the valve it is not fully closing. Quote Link to comment Share on other sites More sharing options...
Scott Posted March 28, 2011 Share Posted March 28, 2011 Possibly a blocked up filter? Sometimes there is enough pressure to actuate the BOV sometimes there isn't? Easy way to test it is just connect the hose directly to the BOV bypassing the filter, to try it out. Quote Link to comment Share on other sites More sharing options...
The-Plethora Posted June 10, 2011 Author Share Posted June 10, 2011 Sorry to bump this but it seems to be getting a little worse. I had my first track day on castle coombe yesterday, the car was like a rocket although those Jspec brakes are useless for that sort of thing! Anyway the BOV seems to be sticking open more regularly now, sometimes fully and sometimes only partically and WD40 doesnt seem to do much, I have removed the filter as suggested and now replaced every vac hose on the car and tied it both ends to avoid any cracked hose. Looking at the fitting it would seem I have to take the whole FMIC pipe it is attatched to off (cant see any other join). Inside the BOV is it basically a spring valve? It looks a bit tricky to get off but if I open this thing up its not going to spring it's insides all over my front room is it? If I wanted to test without the BOV to isolate it (almost certain it is this) can I plug the end of the vac hose with a bolt, is this still safe for the turbos and will it turn the pipe into a bolt firing pea shooter? Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted June 10, 2011 Share Posted June 10, 2011 Sorry to bump this but it seems to be getting a little worse. I had my first track day on castle coombe yesterday, the car was like a rocket although those Jspec brakes are useless for that sort of thing! Anyway the BOV seems to be sticking open more regularly now, sometimes fully and sometimes only partically and WD40 doesnt seem to do much, I have removed the filter as suggested and now replaced every vac hose on the car and tied it both ends to avoid any cracked hose. Looking at the fitting it would seem I have to take the whole FMIC pipe it is attatched to off (cant see any other join). Inside the BOV is it basically a spring valve? It looks a bit tricky to get off but if I open this thing up its not going to spring it's insides all over my front room is it? If I wanted to test without the BOV to isolate it (almost certain it is this) can I plug the end of the vac hose with a bolt, is this still safe for the turbos and will it turn the pipe into a bolt firing pea shooter? Im confused....if the car was like a rocket surely if it was leaking and bleeding off boost the car would be slower?? Get rid of the thing and run the car with no BOV.....that will sort out whether its the BOV sticking open or not. If its not then its maze time with all the other vac hoses and joins Quote Link to comment Share on other sites More sharing options...
The-Plethora Posted June 10, 2011 Author Share Posted June 10, 2011 If you plant your foot hard down about 80% of the time everything appears to seal and the car pulls hard, if you feather it in a little its more likely to not seal properly. So yeah when it sealed all was well, feather it and it seems to leak, let off the pedal for a second and hard down and it usually works. I am happy to take it apart but was wondering how complicated the internals are and if it will explode in a shower of springs and washers. I will try and block the pipe first and see whats what. Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted June 10, 2011 Share Posted June 10, 2011 If you plant your foot hard down about 80% of the time everything appears to seal and the car pulls hard, if you feather it in a little its more likely to not seal properly. So yeah when it sealed all was well, feather it and it seems to leak, let off the pedal for a second and hard down and it usually works. I am happy to take it apart but was wondering how complicated the internals are and if it will explode in a shower of springs and washers. I will try and block the pipe first and see whats what. Is the car still sequential or single? If its sequential, is the stock recirc still on there or has that been blocked off? Quote Link to comment Share on other sites More sharing options...
The-Plethora Posted June 10, 2011 Author Share Posted June 10, 2011 The car is sequential. Where the stock valve sits I still have a pipe but it had been blocked off in the middle, presumably the previous owner(s) kept it there for bling purposes. Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted June 10, 2011 Share Posted June 10, 2011 The car is sequential. Where the stock valve sits I still have a pipe but it had been blocked off in the middle, presumably the previous owner(s) kept it there for bling purposes. How has it been blocked off?? I would check this as well in case this is your culprit Quote Link to comment Share on other sites More sharing options...
TubbyTwo Posted June 10, 2011 Share Posted June 10, 2011 the SSQV is very simple to take appart, just be careful not to lose anything. Quote Link to comment Share on other sites More sharing options...
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