3800 vacuum leak!

[xierxior]

I have a vacuum leak under the throttle body where the EGR tube screws into the intake manifold does this happen alot? and is there some kind of oring in there I have to replace or do I have to replace the tube?

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[GTPquickRB]

on a side note....my egr is not connected to my exhaust manifold. It is currently sticking upward into my engine bay. Is that bad?

 

[xierxior]

Originally posted by 98GTPquickRB@Aug 16 2006, 02:17 AM
on a side note....my egr is not connected to my exhaust manifold.  It is currently sticking upward into my engine bay.  Is that bad?

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you'd have to get pictures

 

[MIKES3]

Originally posted by xierxior+Aug 16 2006, 06:51 AM-->

<!--QuoteBegin-98GTPquickRB

@Aug 16 2006, 02:17 AM
on a side note....my egr is not connected to my exhaust manifold.  It is currently sticking upward into my engine bay.  Is that bad?

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you'd have to get pictures

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If your leaking from your EGR. The most common place where it leaks is on the maniffold. The very end of it. Mine was leaking until someone deleted my EGR h34r:

I did not notice any gas mileage loss when that was taken out.

 

[Sinister Drag Designs]

mike you didnt notice it becauseyou have an IC. with an ic the EGR is pointless. it doesnt need to do its job anymore.
xierxior-talk to ron about what he can do with the and old egr tube end cap or a quarter.

ive heard he is able to do this on cars that dont run on the street h34r:

 

[98 TGP TOY]

Try removing the bolt, and sliding the tube out. Make sure its still round and not crumpled in on any of the sides. If there is any carbon build up on the outside of the tube, on the plate, or on the manifold, clean it off with some fine sand paper. If there is not buildup, then you are going to need to use RTV around the outside of the tube to seal it properly.

Sometimes the tubes crack and leak, in that case you need to find a new egr/tube.

Also, if the other end of the tube is sticking up, then your exhaust must be blocked. That means that somebody wanted to stop the EGR from working, but without throwing in codes. Now the EGR sucks in cool air, and puts it in the engine. So that means its useless.

mike you didnt notice it becauseyou have an IC. with an ic the EGR is pointless. it doesnt need to do its job anymore.

What do you mean it doesnt "need" to do its job anymore. The EGR is designed to fill the combustion chamber with non-combustible gasses, so it can lower the combustion temperature, reduce emissions, and allow a more complete combustion of the fuel. The intercooler doesnt do any of that.

I would say that you didnt notice a difference, because of your driving habits. an EGR is suppose to net you a 1-3 mpg increase in gas mileage. However, if you are on the pedal a lot, then the EGR is barely working.

Mike

 

[MIKES3]

ive heard he is able to do this on cars that dont run on the street

My car sits in the garage right now

 

[xierxior]

Originally posted by SINr247@Aug 16 2006, 01:34 PM
mike you didnt notice it becauseyou have an IC. with an ic the EGR is pointless. it doesnt need to do its job anymore. 
xierxior-talk to ron about what he can do with the and old egr tube end cap or a quarter.

ive heard he is able to do this on cars that dont run on the street h34r:

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I lost 2mpg with vacuum leaking from my egr and if I don't run a egr valve on my t/a I loose like 4mpg so I want to keep the bugger