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cjski
The Wheel Weaves As The Wheel Will
Premium
join:2001-01-04
Sun City, CA

Exhaust leak

2004 Chevy Silverado 5.3L 2WD

I have an exhaust leak somewhere on the driver's side, in the engine area.

Is there an area that these trucks are known to develop exhaust leaks?

Manifold?
Cat Converter?
Maybe at the joint from header to pipe?

How do I go about finding the leak?

Appreciate any info.


Beezel1

@cox.net

said by cjski:

2004 Chevy Silverado 5.3L 2WD

I have an exhaust leak somewhere on the driver's side, in the engine area.

Is there an area that these trucks are known to develop exhaust leaks?

Manifold?

Cat Converter?
Maybe at the joint from header to pipe?

How do I go about finding the leak?

Appreciate any info.

Easy way is to have someone hold their hand with a rag over the tailpipe. This creates back pressure, then listen for the hiss to get an idea of where it is. Then that is where you start investigating joints, parts, etc.


Doctor Olds
I Need A Remedy For What's Ailing Me.
Premium,VIP
join:2001-04-19
1970 442 W30
kudos:18

said by Beezel1 :

Easy way is to have someone hold their hand with a rag over the tailpipe.

Good way to get badly burned, even with a rag. Are you not aware that typical tailpipe temperatures are between 300°F and 700°F? Yes, that can take meat right off of bone.
--
What’s the point of owning a supercar if you can’t scare yourself stupid from time to time?


The Pig
I know you want to be me
Premium
join:2009-09-11

reply to cjski
Safest way to check,
Get a can of Seafoam!
It emits white smoke when you start your engine, so you should see the smoke coming out of the hole in the exhaust!
Plus it is good for your engine, cost about $8 a can!

Drag the slider on the video to 4:27 to see the smoke!
»www.seafoamsales.com/how-to-use-···ent.html
The video will show you how to use Seafoam!



Beezel1

@cox.net

reply to Doctor Olds

said by Doctor Olds:

said by Beezel1 :

Easy way is to have someone hold their hand with a rag over the tailpipe.

Good way to get badly burned, even with a rag. Are you not aware that typical tailpipe temperatures are between 300°F and 700°F? Yes, that can take meat right off of bone.

I am aware and you do it with a thick rag and when the engine is cold and first started. Done it for a living doing state inspections for many many moons.


TA63
ST215W
Premium,MVM
join:2000-11-23
there
kudos:2
Reviews:
·TekSavvy DSL
·Cogeco Cable

said by Beezel1 :

I am aware and you do it with a thick rag and when the engine is cold and first started. Done it for a living doing state inspections for many many moons.

I'll second this.
If necessary, I'll even post a youtube video.
--
The talented hawk speaks French.


mattmag
Premium,ExMod 2000-03
join:2000-04-09
NW Illinois
kudos:3

said by TA63:

I'll second this.
If necessary, I'll even post a youtube video.

I'll third it. It isn't really like sticking your hand in a fire, for Pete's sake...

OP, the manifolds have been known to crack, but that can be difficult to spot with heat shields in place. It's possible to have one of the bolts come loose that secure the manifold to the head also, or they can break. A visual check of the bolts would be good, and when the engine is cold you can check to see if any are loose.

It is possible for the joint between the manifold and head pipe to leak as well, but not as common.

cjski
The Wheel Weaves As The Wheel Will
Premium
join:2001-01-04
Sun City, CA

reply to cjski
Hey, both those methods sound pretty good...maybe i'll use both in conjunction to find the leak.

Thanks!


cjski
The Wheel Weaves As The Wheel Will
Premium
join:2001-01-04
Sun City, CA

reply to mattmag

Thanks Matt, I'll check those also.


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