Smoke testing for a boost leak?

C.bowles2

C.bowles2

2005 lly duramax
Nov 16, 2013
489
0
16
Ohio
So I'm looking for opinions on this approach to finding a boost leak. Would using a evap smoke leak tester on the charging system work? What do y'all think? Maybe making a plug in the intercooler boot with a hold for the evap machine and running the smoke trough it?


05 Chevy LLY

Extended cab short bed 4x4

Sinister EGR delete kit

S&B turbo mouth piece

Sinister intake tube

AEM CAI

PVC reroute

4inch straight pipe

Edge CTS juice with attitude plus hot tuning

PPE race plug and ported FR fitting

33's

Sent from my iPhone using Tapatalk
 
mike diesel

mike diesel

I'm alright.
Sep 6, 2012
4,005
0
36
SLC, Utah
This is all you need. Unhook boost tube off of turbo and put the plug in. Pressurize to 20 psi or so and listen for leaks. $4 at home depot.

temp_zpsda113b4a.jpg
 
dirty_max

dirty_max

Member
Jan 27, 2013
815
2
18
eureka il
shouldnt you have to plug the other end? when i do it at work i plug both ends and one of the plugs had a fitting in it for and air pressure regulator.
 
C.bowles2

C.bowles2

2005 lly duramax
Nov 16, 2013
489
0
16
Ohio
Ok thanks guys, I made this up, should work
9asynuhu.jpg



05 Chevy LLY

Extended cab short bed 4x4

Sinister EGR delete kit

S&B turbo mouth piece

Sinister intake tube

AEM CAI

PVC reroute

4inch straight pipe

Edge CTS juice with attitude plus hot tuning

PPE race plug and ported FR fitting

33's

Sent from my iPhone using Tapatalk
 
Cknight199

Cknight199

New member
Aug 23, 2012
1,827
0
0
Salt Lake City, Utah
Make sure to clamp it off, at 20 psi when it shoots out it sounds like a gunshot. Scared the sh*t out of me.

For some reason when I was pressure testing mine, there was air coming out of the exhaust on my driver side. Had me completely perplexed.
 
DAVe3283

DAVe3283

Heavy & Slow
Sep 3, 2009
3,724
292
83
Boise, ID, USA
Cknight199 said:
Make sure to clamp it off, at 20 psi when it shoots out it sounds like a gunshot. Scared the sh*t out of me.

For some reason when I was pressure testing mine, there was air coming out of the exhaust on my driver side. Had me completely perplexed.
Click to expand...
There is overlap on the Duramax cam, so if the motor stops at just the right point, you can have a cylinder with the intake and exhaust valves both open a little bit.

If that happens, you can bump the motor over and see if you get a different spot, or just plug off the exhaust too.
 
xtremebikr04

xtremebikr04

New member
Jan 17, 2011
573
0
0
Vermont
Why would you only pressurize to 20lbs when your turbo makes more than that? I've seen leaks show up at over 20lbs. The directions in the Kent Moore charge air kit says to test at 32lbs with a stock truck.
 
C.bowles2

C.bowles2

2005 lly duramax
Nov 16, 2013
489
0
16
Ohio
Hmm interesting. Mine peaks at 29 right now but I'll do 32 and see what happens. I'm doing this in search of the cause of my p0299 code :/


05 Chevy LLY

Extended cab short bed 4x4

Sinister EGR delete kit

S&B turbo mouth piece

Sinister intake tube

AEM CAI

PVC reroute

4inch straight pipe

Edge CTS juice with attitude plus hot tuning

PPE race plug and ported FR fitting

33's

Sent from my iPhone using Tapatalk
 
C.bowles2

C.bowles2

2005 lly duramax
Nov 16, 2013
489
0
16
Ohio
Used my tool I made and it works awesome. I found the lower ic boots leaking. Also when putting air in it would actually rotate the engine over haha is that normal? And yea the engine has to be just right to hold sit cause at first it was coming out the exhaust


05 Chevy LLY

Extended cab short bed 4x4

Sinister EGR delete kit

S&B turbo mouth piece

Sinister intake tube

AEM CAI

PVC reroute

4inch straight pipe

Edge CTS juice with attitude plus hot tuning

PPE race plug and ported FR fitting

33's

Sent from my iPhone using Tapatalk
 
C.bowles2

C.bowles2

2005 lly duramax
Nov 16, 2013
489
0
16
Ohio
I only went to 35 max


05 Chevy LLY

Extended cab short bed 4x4

Sinister EGR delete kit

S&B turbo mouth piece

Sinister intake tube

AEM CAI

PVC reroute

4inch straight pipe

Edge CTS juice with attitude plus hot tuning

PPE race plug and ported FR fitting

33's

Sent from my iPhone using Tapatalk
 
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