Bov problems!!!
10-10-07, 05:32 AM
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Bov problems!!!
I have been doing a ton of reading on here and could not find out what to do. My bov it not working at all. The only noise I hear is compressor surge. I took the bov off and can push it in by hand. I had the screw on soft and hard and everywhere inbetween. I pulled the vacuum hose off and there is vacuum there.. maybe not enough?? I called greddy cuz it is a greddy type rs... they want me to send it to them so they can look at it... but i would rather not send it out if I dont have to. I am running the bov with a front mount. Does anybody have any ideas of what i can do. I really dont want to send it out if I could figure it out myself. Please give me your ideas guys.. I really need your help!!!
10-10-07, 06:37 AM
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Ouch.
My suggestion would be to take it to a turbocharging shop asap if you're not prepared to send it away rather than waiting for someone to post, sounds like something you'd have to see to work it out, but forgive me if I'm wrong.
Take it to a turbo/performance shop or bite the bullet and send it: Because compressor surge is just lovely for your turbo
My suggestion would be to take it to a turbocharging shop asap if you're not prepared to send it away rather than waiting for someone to post, sounds like something you'd have to see to work it out, but forgive me if I'm wrong.
Take it to a turbo/performance shop or bite the bullet and send it: Because compressor surge is just lovely for your turbo
10-10-07, 09:26 AM
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Ditch the noisemaker all together. There are a few LONG threads on whether or not you need it. I haven't been running one for awhile now with my hybrid and FMIC and haven't sheared any shafts.
10-10-07, 04:06 PM
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I put on another bov from my buddys 7 which i know works and is pretty loud and that one lets out a little bit of air on my 7.... i tried adjusting it but still get alot of surge and the bov seems like its not venting enuff. I am at such a loss for words now... I dont know what the problem is
10-10-07, 04:46 PM
#5
there are only a couple of reasons a BOV doesn't work...
1. vacuum diaphram/chamber has a hole in it
2. siezed up
3. connected to the wrong vacuum source
I am suspecting that you have the wrong source... a prefered source would be somewhere after the throttle plates on the primary intake curcuit, I would try placing a 'T' fitting on the MAP sensor vacuum line for the source
1. vacuum diaphram/chamber has a hole in it
2. siezed up
3. connected to the wrong vacuum source
I am suspecting that you have the wrong source... a prefered source would be somewhere after the throttle plates on the primary intake curcuit, I would try placing a 'T' fitting on the MAP sensor vacuum line for the source
10-10-07, 05:07 PM
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I took the hose right off of my boost gauge... i figured that would be fine
I know there is good vacuum cuz i used my boost gauge hose... and I know the bov is good cuz I took it off my friends car and I know it works. Please help guys!!!!
I know there is good vacuum cuz i used my boost gauge hose... and I know the bov is good cuz I took it off my friends car and I know it works. Please help guys!!!!
Last edited by Aaron Cake; 10-14-07 at 10:28 AM. Reason: Merge two posts
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10-11-07, 03:24 PM
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My boost gauge hose is running from the bottom nipple on the back side of the intake... the two obove that are blocked off. But the guy i got the car from has a t fitting off of that bottom nipple and it runs my boost gauge and fuel pressure reg. I first had the bov hooked up to a vacuum tube that was coming off the front of the intake manifold.
any other thoughts on this problem??? I have no ideas at this point
any other thoughts on this problem??? I have no ideas at this point
Last edited by Aaron Cake; 10-14-07 at 10:28 AM. Reason: Merge two posts
10-11-07, 06:10 PM
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a picture is gonna be the best way for us to diagnose the problem. i have the exact same setup and had the same BOV and i had this same problem for a while and i found out i had the wrong source.
10-12-07, 01:54 PM
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Well I was gonna put some pics on here.. but to tell you the truth I have no idea how to do it. I tried but did not work very well. All I can say is the bov is going to the bottom nipple on the front of the intake after the throttle body. My boost gauge and fuel pressure regulator are running off of the bottom nipple on the back of the intake right after the throttle body. Can anyone picture this?
10-12-07, 07:42 PM
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Here are some pics First is a pic of my setup http://i225.photobucket.com/albums/d...llPics0001.jpg Next is a pic of the bov the regulator is hooked up to the bottom nipple in the next pic.. also on that is my boost gauge.
Here is the bottom nipple runnin the reg and boost gauge
Next is a pic of my bov tube hokked up to front of intake manifold
Next is where my bov tube goes to
...... That is how the guy i got the car from had it. I took my bov hose and unpluged the boost gauge and hooked the bov up to that. Is this all wrong. Should I separate all of them. The bov is not doin anything... well my buddys that I put on did a little somethin but was no strong.. it was real weak... PLEASE HELP GUYS!!!!
Here is the bottom nipple runnin the reg and boost gauge Next is a pic of my bov tube hokked up to front of intake manifold Next is where my bov tube goes to...... That is how the guy i got the car from had it. I took my bov hose and unpluged the boost gauge and hooked the bov up to that. Is this all wrong. Should I separate all of them. The bov is not doin anything... well my buddys that I put on did a little somethin but was no strong.. it was real weak... PLEASE HELP GUYS!!!!
10-12-07, 08:56 PM
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Last edited by Aaron Cake; 10-14-07 at 10:29 AM. Reason: Merge two posts
10-12-07, 09:29 PM
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It is the only way that I could show where the tubes were going was to get close pics. The last pic is under the front of the UIM. The pic above that goes from my bov to the front of th UIM.... (the blue tube in the front of the UIM). The pic before that is the back side of the UIM right after the throttle body... you can see the throttle cable in the pic. And the pic before that with the black T fitting.... the left hose goes to where the second pic shows.. the right hose off the T goes to my boost gauge and the bottom hose off the T goes to my fuel press reg. It was the only way I could show where tho hoses go... sorry guys.. I just want to solve this problem
Well it turns out that my bov is working somewhat. It does open and close. I have adjusted the screw and messed with it. I am still getting very bad compressor surge. My buddy seems to think that it is because of my exhaust. I have a full racing beat exhaust.. but after the down pipe I have got what looks like a muffler. My buddy told me to pull that out and put a piece of straight pipe there. Could that have been my surge problem??? Maybe due to the fact that I am pushing thru alot of air and the exhaust cant keep up and is pushin air thru the turbo????
I mean should I move the bov?? Will it be better to be over by the turbo and solve my surge problem?? If I have a problem tho I would like to solve it instead of just movin the bov.
I dont know what to do here?? I just want to drive my car!!!
Well it turns out that my bov is working somewhat. It does open and close. I have adjusted the screw and messed with it. I am still getting very bad compressor surge. My buddy seems to think that it is because of my exhaust. I have a full racing beat exhaust.. but after the down pipe I have got what looks like a muffler. My buddy told me to pull that out and put a piece of straight pipe there. Could that have been my surge problem??? Maybe due to the fact that I am pushing thru alot of air and the exhaust cant keep up and is pushin air thru the turbo????
I mean should I move the bov?? Will it be better to be over by the turbo and solve my surge problem?? If I have a problem tho I would like to solve it instead of just movin the bov.
I dont know what to do here?? I just want to drive my car!!!
Last edited by Aaron Cake; 10-14-07 at 10:30 AM. Reason: Merge 4 posts
10-13-07, 08:58 PM
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Well I am sure that I can drive it but it just sounds sooooo bad. I mean my bov should be alot louder than it is... I mean the sound of bein loud is not a big deal... I dont care about the bov sound but knowing that it is not sounding the way it should and the bad surge leads me to believe there is something wrong but i could be wrong?? I just dont want to hurt anything.
10-13-07, 09:50 PM
#19
Well personally I would never run it without the bov. All that air is just making your turbo stop very quick which from what Ive read is NO GOOD. You also might try to keep your vacuum hoses as short as possible. Your pics arent very clear but you should run it off the passenger side uim(right above the turbo) there is a fitting there.
10-13-07, 11:15 PM
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The turbo stops very quickly anyway. It takes alot of power to drive it. The second you lift that engine is making nowhere near the power it needs to turn the thing. There is no load on the exhaust side. Its freewheeling, there is no force opposing it. You won't break anything.
10-14-07, 12:10 AM
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I just dont like the way that surge is sounding. I just feel like the bov should be doing more than it is. It just seems like it is letting out very weak. Siguy2k do you have a pic of where I should run the vacuum hose to on pass side??
10-14-07, 01:46 AM
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Go back up to post #17, click the link and read. It's long, but you might just learn something.
10-14-07, 02:54 AM
#25
Yea I did read it and all it told me was that people have their own ideas on things. Personally what the hell is the point of risking wear and tear and possible breaking your turbo??? Just doesnt make sense to me. And there is a reason why you see more people with them than not. Why do stock turbo cars almost always have them???? Anyway to the OP I dont have my car right now but will try to find one and show you. On mine I think that its the only one back there. Its what I have my Bov, Boost gauge and boost controller running off of and have had no problems. Its just a little vacuum nipple right above the turbo on the UIM.