This is fu*k up
 

OK I did a boost leak test. So the intake pipe is NOT hook up to the intake manifold at all right I have it plug off and I have a plug on the inlet on the turbo thats were I am adding air. I tryed to put 23lbs in thats what I running for boost and there is a leak but whats fuck up is there AIR COMING OUT OF THE VALVE COVER were most people put there oil catch can hose at. Any idea on why this is happening.
Here are some pics
http://i259.photobucket.com/albums/h...ille/044-3.jpg
http://i259.photobucket.com/albums/h...ille/042-1.jpg
http://i259.photobucket.com/albums/h...ille/041-1.jpg
http://i259.photobucket.com/albums/h...ille/039-1.jpg

Re: This is fu*k up
 

Yeah, its leaking past your rings or valves... kinda normal for air to come from the valve cover actually.

Re: This is fu*k up
 

Good chance its a busted PCV valve. I had a huge leak due to that with my car. Good thing to try is take a bolt and plug up the hose going to the pcv. Use a little hose clamp to make sure the bolt is secure. Pump up your system again and see. If its not the PCV you will here it leak from somewhere else. Have Fun Mine held 32PSI after i fixed the PCV till the tester kit came flying of its Kinda Scary.

Re: This is fu*k up
 

Car psycho actually help'd me with the leak down test. I hope you dont have no bend valves. Best thing to do is get one two maybe even three people to help you listen, for the leak.

Re: This is fu*k up
 

I had two bend valves but I got them fix at a shop in mankato two months ago.

Re: This is fu*k up
 

It's normal for some air to leak past the rings and leak back out through the breather... only way to know if its too much is a leak down test though.

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The only way this can happen is through a vacuum line because of the way I am doing the boost leak test. So some thing is not right with the wastegate or the BOV.

Re: This is fu*k up
 

Hand held vacuum pump for BOV. . .

Re: This is fu*k up
 

Umm, Why do you have it disconnected from the throttle body? Most of the time, you want it attached so you can verify that there are no leaks around the intake manifold.

Re: This is fu*k up
 

This was a way I have seen people do it.

Re: This is fu*k up
 

Oh, perhaps that explains. You should pressurize your whole intake system as well. You can either start from your throttle body. Or from your turbo outlet. You'll get it just be thorough

Re: This is fu*k up
 

I have never done a boost leak test before. So what the best way to do it?
here
http://www.youtube.com/watch?v=atretf9u-Mc

Re: This is fu*k up
 

Seems like air is leaking passed your bov and going through the line to the intake manifold, then through the pcv line, and then through the breather. Hook you UICP back up to the manifold so you can pressurize the whole intake system.

Re: This is fu*k up
 

Just hook your UICP back up to the throttle body. That's the normal way of doing it.

Re: This is fu*k up
 

Thanks will do. But wont some of the value be open and let air out through the exhausts manifold.

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Valve i am assuming. No they should be sealed unless you bend them again. Did you figure out what caused the valves to bend the 1st time? perhaps the problem is occurring again. Gives a little more detail as to what goes on under boost. Does your car sputter or do you just hear a leak? Does it idle like crap? Or does it just not want to go above a certain RPM?

Re: This is fu*k up
 

To make along story short. My timing belt tensioner was bad and I didn't know that. I was having some fun and the timing jumped and I bent two intake valves. So I had two new ones put in but I doubt think that place that did the work did the three angle valve job on them to mach the other ones. Me and shane at DB were thinking that there might still be some bent valves or a bad valves guide. Because there was some oil on the number one cylinder and the other three cylinder look good.

The car run's way better then what it did. It put down 330 to the wheels. Shane was telling me that it STILL A 130 to 150 hp off of what it should be with my set up. It just stop making power even with more boost so that's why we think it the head. I did a compression and leak down tests and it was all good. So now I am thinking it a boost leak.

Re: This is fu*k up
 

Go off the turbo for the boost leak test

Re: This is fu*k up
 

Your threads have been interesting...I've never had to do these test before, either.

Re: This is fu*k up
 

It sounds like the shop you went to in mankato just did a quick fix at your expense. If there are valves with an angle job and then they throw in just a normal valve they are doing it wrong. Im guessing that they just repaired it and that they didnt pull out all of your other valves and check them for minor imperfections and the guides for issues. Im guessing there is still some damage in your head. I would pull it off at some point and send it in to a nice DSM specific shop to get it checked out and reworked over.

Re: This is fu*k up
 

Every time I've seen and done a boost leak test the adapter you apply air pressure to is connected to the inlet of the turbo. This ensures that the entire intake system is pressurized and tested all the way from the turbo to the intercooler past the blow off valve into the throttle body, intake manifold and head. The engine itself will hold enough air for it to keep a steady pressure while you listen for leaks.

Re: This is fu*k up
 

I would say air is leaking past the rings (as most have said this is normal for dsms) What plugging up the TB hose does is checks just the pipes from the turbo through the IC up to the TB. But nothing should be going into the head, unless like someone said earlier, the air is going from the BOV line to the Valve Cover.

Re: This is fu*k up
 

Moved to tech forum:

Without the throttle body hooked up, the only way for air to bleed off into the crankcase would be through the turbo seals into the oil pan. There is no other connection to the crankcase other than the turbo drain with the way it was done in the first post. The BOV takes its boost/vacuum sources from the intake manifold and turbo after the compressor. Even if the BOV is blown or leaking, it wouldn't get into the crankcase, it would leak into the intake manifold and go out the throttle body or straight to atmosphere.

Re: This is fu*k up
 

Oooor if his pcv valve isn't working properly it could be going straight into the valve cover from there. You have a good point about the turbo. Forgot all about that..

Re: This is fu*k up
 

PCV is not an issue because it's not seeing any pressure from his testing method. The intake manifold was not pressurized.

Re: This is fu*k up
 

I did not realize he was not pressurizing the intake manifold at first... I think viciousgsx is right, that would be the only way for the air to get into the crankcase... Like the slight leakage past the rings in the engine, a little air leak is probably ok, if you can't even build pressure its probably not.

1 flaw to boost leak testing without pressurizing the intake manifold is most BOV's are driven off the intake manifold and actually use the boost pressure to help them stay closed, so they will start leaking at a lower pressure than if the whole system was under pressure.

Re: This is fu*k up
 

Good discussion.

First off, the way you're doing it by disconnecting the UCIP from the throttle body is not how I normally do it, but it is good at isolating an issue with a leaky BOV and/or turbo seals.
As, is, answer these questions:
1) Is there any air coming out of the BOV?
2) Does the system hold any pressure at all? Or does it all just completely blow out of the valve cover breather? You should at least be able to build it up to 10-15psi, unhook pressure, and have it sit there while you look for leaks.
2a) if you block off the valve cover breather w/ your finger, does it leak anywhere else? Just a small amount of boost would be a fine test, 3-5psi.

Next, hook up your UICP to your TB again and do the test. Again, does it hold *any* boost or does it all just leak out instantly?

Side question: did you have shane do a leakdown test? That should really let you know if there's a problem with your head.

Re: This is fu*k up
 

I didn't think about it until it was said, but this is a very good point. Maybe even go as far as blocking off the turbo outlet and do another test to verify it even more.

You mentioned that your timing tensioner went bad, was it the hydrolic part or the pulley. Does your timing belt get lose after sitting awhile? This Would mean the tensioner pulley isn't adjusted properly.

Re: This is fu*k up
 

Great idea!