turbo cuts out???

[project-GST]

so im kinda stumpt when i begin to build boost my car cuts out (at 2.5 psi)and kinda chugs for a second. i thought maybe a boost leak so i checked all couplers and nothing. does anybody have a clue?

 

[crash89]

How did you go about "checking" the couplers? did you just tighten them? Or, take them off and re-apply them? A proper boost leak test should be given to know exactly if they're fixed.. Also are you still running off the stock boost guage? After the car "chugs" does it pick back up and build to full boost?

 

[landon95dsm]

My wastegate actuator was bent in to close to the turbo and could not open.It caused me to over boost. felt like i hit a brick wall when it fuel cut.
Oops thought you said 2.5 rpm...sorry..
Time to build a boost leak tester

 

[project-GST]

i just tightened the couplers. i have an aftermarket boost gauge. no i cant build full boost i cant even get over 2.5 psi. this just happened tonight i am normally running 16 psi

boost leak tester? how would i go about doing that? it doesnt really feel like boost like ive blown a few couplers because they werent tightened and it this doesnt seem the same.... when i start to build that sad 2.5 psi it makes a flutter sound with no blow off. i really do hope it is a boost leak though haha

 

[landon95dsm]

Does it smoke like hell when you try to keep going after it stops building psi?

http://www.vfaq.com/mods/ICtester.html

Jafromobile on youtube also has a full video on making one.
^ has a lot of great videos for our cars.

 

[Alex7747]

After the car "chugs" does it pick back up and build to full boost?

what would this mean? As my car does something like this...

 

[project-GST]

no, no smoking at all. thanks for the link for the tester im gonna have to try that out

 

[landon95dsm]

I had a busted intercooler once..so a really bad boost leak caused it to smoke really bad when i tried to push it over, and not pull over 2-3k rpm.It would not pick up boost either.

 

[bryzenga]

Almost positive that it is a boost leak. Its gotta be some where. Check your couplers again, look for rips and tears on the undersides of them, build a boost leak tester and have at it. Symptoms match what a boost leak causes.