boost leak test help

[ztotheigg]

so my car has been running very rich and first thing i thought of was boost leak...soo. i went to do my boost leak test and my system will not hold any pressure....therefore i cannot tell where leaks are.. could i have that big of a leak?

 

[doubleclutch99]

so my car has been running very rich and first thing i thought of was boost leak...soo. i went to do my boost leak test and my system will not hold any pressure....therefore i cannot tell where leaks are.. could i have that big of a leak?

Yes it could be a big leak . are you using a spray bottle with soapy water to check for leaks? how much psi of air are you pumping to it when doing the boost leak test?

 

[DSMTyson]

so my car has been running very rich and first thing i thought of was boost leak...soo. i went to do my boost leak test and my system will not hold any pressure....therefore i cannot tell where leaks are.. could i have that big of a leak?

Yes, if you have enough boost leaks or a boost leak big enough this can happen.

Get a friend to keep filling the intake system with air. While you spray/splash everything with soapy water.

 

[ztotheigg]

i only had me when i was doing it. so i sprayed everything really well with soapy water and then filled with air. the only parts i could really see were the biss screw (leaking) and the hose from the stock turbo to the intercooler (no leak) and the bov (not leaking) o and i was using 20 psi

 

[9!'clipseDOHC]

How much air ar you pumping in? The bigger the compressor you can use the easier this process will be. Also in your case, start your boost leak test at the throttle body elbow and work on that half of the system first. Once you get that section of your system to hold your desired boost, then move back to the turbo inlet. Lastly, fix every leak you find as you find it. Please don't have the "oh its just a small boost leak" attitude. They all add up.

Hope this helps!

 

[ztotheigg]

How much air ar you pumping in? The bigger the compressor you can use the easier this process will be. Also in your case, start your boost leak test at the throttle body elbow and work on that half of the system first. Once you get that section of your system to hold your desired boost, then move back to the turbo inlet. Lastly, fix every leak you find as you find it. Please don't have the "oh its just a small boost leak" attitude. They all add up.

Hope this helps!

i am pushing 20 psi in. and i have a 185 gallon compressor. and i will start at the throttle body elbow first. hopefully ill get some help in doing my test. and when you say start at the elbow do i just put my blt on the throttle body itself and then do my test? just makin sure im understanding correctly. but i have already fixed the biss leak.


and just to add i just got back from autozone and had them run a cel scanner. came up as small evap leak. i got a new gas cap and nothing changed. dont know if that would have anything to do with this. also i installed a brand new coolant temp sensor a few days ago.

 

[9!'clipseDOHC]

i am pushing 20 psi in. and i have a 185 gallon compressor. and i will start at the throttle body elbow first. hopefully ill get some help in doing my test. and when you say start at the elbow do i just put my blt on the throttle body itself and then do my test? just makin sure im understanding correctly. but i have already fixed the biss leak.

Well 185 gallons will work just fine wow and I thought my 33 gallon compressor was big.

Yes put your boost leak tester on the throttle body elbow. This will test your throttle body shaft seals, gaskets, intake manifold gasket, egr, fuel injector seals, bov vac line, fpr vac line, brake booster line, etc. Once you have that holding what you want, move back to the turbo inlet and test the entire intake system. You are on the right track, keep it up!

 

[ztotheigg]

Well 185 gallons will work just fine wow and I thought my 33 gallon compressor was big.

Yes put your boost leak tester on the throttle body elbow. This will test your throttle body shaft seals, gaskets, intake manifold gasket, egr, fuel injector seals, bov vac line, fpr vac line, brake booster line, etc. Once you have that holding what you want, move back to the turbo inlet and test the entire intake system. You are on the right track, keep it up!

yes. it is a very big compressor. had to go through the garage door.. i should get a picture of it haha. ok i will do the test tomorrow. thanks so much for the help. ill let ya know what happens tomorrow.

 

[GMCometh]

Thread revival....

I'm in the process of building my boost leak tester as we speak. I was curious as to how much air I should be pumping in. I have read several threads (including this one) that state 20psi. On the other hand, I've read I should only use as much as I am currently boosting. Seeing as how I'm completely stock, that would be 12psi. Any comments???

Figured it'd be safer to ask than be sorry and destroy something.....

 

[ztotheigg]

Thread revival....

I'm in the process of building my boost leak tester as we speak. I was curious as to how much air I should be pumping in. I have read several threads (including this one) that state 20psi. On the other hand, I've read I should only use as much as I am currently boosting. Seeing as how I'm completely stock, that would be 12psi. Any comments???

Figured it'd be safer to ask than be sorry and destroy something.....

Ive been testing mine at 20 PSI every time i test. And i run stock boost. You will be fine with 20. If you are worried about it use 15 PSI. hope that eases your worries.

 

[LiquidX]

Do a minimum of 20psi. You won't hurt anything. Hell, I have tested mine at 40psi.

 

[GMCometh]

Ive been testing mine at 20 PSI every time i test. And i run stock boost. You will be fine with 20. If you are worried about it use 15 PSI. hope that eases your worries.

Do a minimum of 20psi. You won't hurt anything. Hell, I have tested mine at 40psi.

Alright. Great to know. Thanks guys!

 

[mikus]

Agreed you're highly unlikely to hurt anything (that wouldn't fail down the road anyway)... but for me, low amount is fine. Those leaks will whistle dixie at 10psi, you'll have no problem finding them.

 

[twotall]

boost leak test try this http://www.dsmtuners.com/forums/art...-boost-leak-test-how-boostpro-net-tester.html