High boost whistle/scream

[kirkland]

I'm at a loss, it's been 2 weeks since I did the EGR delete and 5" exhaust. Its been driving awesome up until 2 nights ago when you put your foot to the floor it's whistles/screams and it's loud and then pretty much falls on its face now it drives just fine if you keep you foot out of it I have went through and re tightened the block off plate on the down pipe, I double checked my seal at the down pipe and exhaust, and double checked all the bolts I had taken off

Is it possible to put the gasket on backwards? I don't think that's the problem since it ran awesome for 2 weeks but it could be, can I put gasket sealant on it?

Any suggestions ? Thanks guys

 

[bluecollar]

Sounds like a drive pressure leak for sure.. check the bellows on ur up pipe and make sure its not cracked..

 

[coker6303]

Whose EGR delete? If it uses the stock y bridge, does it have support brackets? Could have kicked the neck of the y bridge out.

Do you see soot around the block off plate on the up pipe? You could remove the up pipe and have it welded shut.

 

[bluecollar]

Whose EGR delete? If it uses the stock y bridge, does it have support brackets? Could have kicked the neck of the y bridge out.

Do you see soot around the block off plate on the up pipe? You could remove the up pipe and have it welded shut.

X2 on checking the neck aswell

 

[mike diesel]

Whose EGR delete? If it uses the stock y bridge, does it have support brackets? Could have kicked the neck of the y bridge out.

Do you see soot around the block off plate on the up pipe? You could remove the up pipe and have it welded shut.

The y bridge blow out sounds most likely the cause. They howl like crazy if they leak/pop out.

 

[kirkland]

Whose EGR delete? If it uses the stock y bridge, does it have support brackets? Could have kicked the neck of the y bridge out.

Do you see soot around the block off plate on the up pipe? You could remove the up pipe and have it welded shut.

I've got the sinister delete, and it's rather clean at the block off plate

It very well could be at the y bridge I've got the bracket resting in there but there wasn't any chance I was gonna get the bolts in it .. After everything was tightened up there wasn't any play in it

 

[catman3126]

Did you have the up pipes out? pass side by any chance?

 

[redws6rocket]

I bet your bracket for the egr port on the exhaust is broken. I have seen them do that and blow out at the bellow there!

 

[kirkland]

I just got home from work and got video of it now, if I can figure out how to post it I will

Only things I had apart was the normal pieces to get the EGR cooler out


http://i182.photobucket.com/albums/...2A752D1-8928-00000B2D289E09C9_zpsaca994ae.mp4

its alot better on my phone... =/

 

[MAXX IT OUT]

This question is coming from left field, but what hp tune are you running? Your sig doesn't say you have a lift pump, could you be losing rail pressure?

 

[kirkland]

This question is coming from left field, but what hp tune are you running? Your sig doesn't say you have a lift pump, could you be losing rail pressure?

I am on a stock tune, getting a new fuel filter tonight also to hopefully rule that out

lift pump is next if i can get this leak fixed with out buying better hard parts lol

 

[slipclutchms]

Sounds more boost leak than drive pressure leak to me

 

[kirkland]

I found it .. I blew the Y out sad day lmao now I'll get back to wrenching

** is there any chance the O rings are still good or I can get them at a auto parts store?

Thank you all for the tips I should of looked there from the get go but I assumed it was something I had taken off

Thanks you guys!

 

[kirkland]

Blew the inner O ring found more soot to clean out which if I would of realized the Y pipe come out so easy I would of took it out when I cleaned the other piece... Learning more and more about this truck everyday lol

 

[coker6303]

Easy fix! Glad you found it

 

[kirkland]

Easy fix! Glad you found it

Wasn't to bad to fix, the new O rings were kind of a pain to seat but it's in there and I forced a bolt through the bracket that came with my kit and it is now rock solid so hopefully it will hold it in there

Just took her for a spin and she is making boost now she sounds happy again

 

[trashygasman]

Are the o-rings on the top side of the bridge or bottom? I think I have the same problem after installing my delete yesterday.

 

[coker6303]

There are 2 o rings were the y bridge connects to the intake elbow. If it's not supported, the intake can move just enough to kick out the elbow and cut the O ring.

You don't have to remove the y bridge, just the intake side.

 

[trashygasman]

K thanks. I noticed it was wiggling a little before I bolted the support bracket down. But the north wind had switched around and was blowing straight in the garage about 30mph on me last night, so I gave up on it for the night. I will check it out tonight hopefully.

 

[DIESELMAFIAPER.LB7]

clean that thing out lol