jza800 Posted June 1, 2015 Share Posted June 1, 2015 (edited) i gonna see on my vsv to be sure they work propely as i have a problem to get the 2nd turbo to come online, sometimes it comes, but not on the 3800 -4000 range as it should, sometimes it comes online about 5000 rpm, and other times it comes as it should, about the 3800 - 4000 rpm range when i put the car in ttc mode, i now i am eliminates the vsv from the system, but when i put it in ttc mode, the egcv vsv and the iacv vsv stayes open.. from the other engine i had those vsv closede within a week, mean that there should be a leak somewhere, and with the new engine, the vsv stayes open, iven after a week, so that should mean that i dont have a leak somewhere... so that leads me back to some vsv dont work as they should.. and to the vacum leak.. when the engine idle, if i get it a little rev, not much it disserpers total.. when it is hot it is very diffcault to hear, but when cold, easy to hear.. it really sounds like i have a vacum leak, by the intake manifold somewhere.. i have tried with brake cleaner to hear if the engine show sign off a leak by the idle will raise.. but it dosent, so is i posible to have a leak, that dont make the idle raise when i trie with brake cleaner Edited June 1, 2015 by jza800 (see edit history) Quote Link to comment Share on other sites More sharing options...
jza800 Posted June 3, 2015 Author Share Posted June 3, 2015 Anyone??? Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted June 3, 2015 Share Posted June 3, 2015 when i put the car in ttc mode, i now i am eliminates the vsv from the system, Correct but when i put it in ttc mode, the egcv vsv and the iacv vsv stayes open.. Wrong. The VSVs (vacuum solenoid valves) are bypassed, the EGB and IAC valves will be open from the other engine i had those vsv closede within a week, mean that there should be a leak somewhere, and with the new engine, the vsv stayes open, iven after a week, so that should mean that i dont have a leak somewhere... so that leads me back to some vsv dont work as they should So what your saying is, the engine has sat for a week and the valves both closed? Or you're using the car every day and after a week they closed? Quote Link to comment Share on other sites More sharing options...
jza800 Posted June 3, 2015 Author Share Posted June 3, 2015 So what your saying is, the engine has sat for a week and the valves both closed? Or you're using the car every day and after a week they closed? i dont use the car every day, it can be in the garage a whole week not bearing driven.. and if i did that with the old engine, the valves close within that week, with the new engine, the valves stayes open when the week is over.. and i have it in ttc now, just to make sure is was not a turbo problem Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted June 3, 2015 Share Posted June 3, 2015 A week for old rubber hoses to hold pressure isn't bad, just drive it more! Or replace all the hoses Quote Link to comment Share on other sites More sharing options...
jza800 Posted June 3, 2015 Author Share Posted June 3, 2015 i have replaced all vacum hoses on the entire engine... Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted June 3, 2015 Share Posted June 3, 2015 I wouldn't worry about it, seriously. As long as they open once you get a bit of pressure in the system its nothing to worry about. Quote Link to comment Share on other sites More sharing options...
jza800 Posted June 4, 2015 Author Share Posted June 4, 2015 Yes but the problem is when i put it back to seq turbo 2 dosent come online before about 4500 to 5000 rpm, But sometimes it comes as it should about the 3800-4000 rpm range. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted June 4, 2015 Share Posted June 4, 2015 (edited) Thats the IACV VSV. Luckily though I have one for sale http://www.mkivsupra.net/vbb/showthread.php?319420-Brand-new-in-bag-IACV-VSV Edited June 4, 2015 by Swampy442 (see edit history) Quote Link to comment Share on other sites More sharing options...
jza800 Posted June 8, 2015 Author Share Posted June 8, 2015 i have now tried to put some pressure to the pressure tank by the pipe that connect to the y-pipe, how long should i hold pressure???? Quote Link to comment Share on other sites More sharing options...
ScottC Posted June 8, 2015 Share Posted June 8, 2015 (edited) I'm guessing it's a VSV Edited June 8, 2015 by ScottC (see edit history) Quote Link to comment Share on other sites More sharing options...
jza800 Posted June 8, 2015 Author Share Posted June 8, 2015 the ttc mode, dont test the pressure tank underneth the intake does it???? Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted June 8, 2015 Share Posted June 8, 2015 It should hold pressure indefinitely, if it doesn't, its leaking. TTC mode uses the pressure in the tank to hold the valves open I think. Quote Link to comment Share on other sites More sharing options...
jza800 Posted June 9, 2015 Author Share Posted June 9, 2015 I have tried overnight, and it dont hold the 10 psi off pressure, this morning it was down to about, 2 psi. It that normal. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted June 9, 2015 Share Posted June 9, 2015 How did you test it? Quote Link to comment Share on other sites More sharing options...
jza800 Posted June 9, 2015 Author Share Posted June 9, 2015 As i wrote in post 10 with a miltyvac Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 9, 2015 Share Posted June 9, 2015 The Mityvac itself probably leaks. So long as the system holds pressure for an hour or so it will function just fine. Pressure test the whole system, I leave it to you to work out where to apply pressure Quote Link to comment Share on other sites More sharing options...
jza800 Posted June 9, 2015 Author Share Posted June 9, 2015 i have tried to look on stu wrote up on the se system, i have tried google too, but cant find a write up how to test the whole system.. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 9, 2015 Share Posted June 9, 2015 Work out where the system takes pressure from near the stock recirculation valve. Apply pressure there after disconnecting the hose from the plenum of course, first. You only have 2 pipes to choose from You DID say you were doing this to learn.... A Mityvac is not suitable, you need an airline source, regulated down to no more than 20PSI. Quote Link to comment Share on other sites More sharing options...
jza800 Posted June 9, 2015 Author Share Posted June 9, 2015 (edited) Yes.. if it is this that feed the pressure to the system, that is that one i have my mityvac connectet to on the first picture.. i have tried only with 10 psi.. should i apply more pressure.. Edited June 9, 2015 by jza800 (see edit history) Quote Link to comment Share on other sites More sharing options...
jza800 Posted June 9, 2015 Author Share Posted June 9, 2015 it is dropping about 2 psi/hour. is that ok?? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 9, 2015 Share Posted June 9, 2015 Yes, that should be fine. Quote Link to comment Share on other sites More sharing options...
jza800 Posted June 9, 2015 Author Share Posted June 9, 2015 Ok, i have tried with 20 psi, and can see the westegate on the 2nd turbo is open.. so you would mean i then have a vsv problem or??? Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted June 9, 2015 Share Posted June 9, 2015 Well yes, you know you have, thats why its in TTC mode?! You're testing because you think you have a leak in the system. I think, Im not sure any more :/ Quote Link to comment Share on other sites More sharing options...
jza800 Posted June 9, 2015 Author Share Posted June 9, 2015 i was testing for leaking because that also could be the reason that the seq dont work, so when i now that all lines is operating as it should, there is only the vsv back to inspekt.. right?? Quote Link to comment Share on other sites More sharing options...
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