boost leak?

[crimsonGST]

I'm having troubles with my boost, there are no mods done turbo-wise and for some reason im getting levels of up to 20psi on a stock 6bolt turbo, i think its a 14b? I was told to do a boost leak test. Someone suggested using seafoam because of the smoke it causes, but isn't there a more reliable way? Also once i've found my leak, what steps do i take to fix it?

 

[chico904]

Do you have a MBC or the stockone installed? Yes, the 14b is the stock turbo on the 6 bolt. I'm a fan of using seafoam, but it's not a fix-all, especially if your car is smoking already. What color is the smoke coming out? And yes, DEFINITELY do a boost leak test. Once you locate the leak, or leaks in many people's cases, it depends on where/what it is on how to fix it. i.e. just simply retightening clamps, new couplers, using silicon, o-rings, new bov...etc...

 

[crimsonGST]

No MBC and since I just purchased the car about two weeks ago I'm not sure as to whether the stock one is installed either. Where would it be located so I can check and give you some more info to work with? The smoke is a very light gray (almost non visible) and seems to be in order since I replaced my cat with a test pipe.

 

[erald01]

Sounds like boost creep to me (your turbo is over boosting). What is your psi set at? Check the vacum lines by the wastegate actuater, and your j-pipe.

 

[crimsonGST]

That's the problem, I dont know how to check that. That's kind of what im wondering. If I need to do a boost leak test. Or how to check what the psi is set to. I have a boost gauge and thats how i know its going way over 20psi. I only want to run 12psi. The turbo is internally wastegated. I know on an external you just have to adjust the spring, but how do i change this one?

 

[erald01]

Like i said check the vacum line that goes to your waste gate and the one that goes to your j-pipe ( the pipe that connects from the turbo to the intercooler). I had the same problem last week and i noticed that the vacum line that goes to the waste gate was tore up.

 

[crimsonGST]

Okay! I'll check that tomorrow when I get off of work.

 

[98GSXtreme07]

I know its like 2 weeks away but if your coming to the meet on Sept. 6th, I can help with whatever problems you may have.

http://www.dsmtuners.com/forums/gulf-coast-dsm-forum/305470-louisiana-meet-brla.html

 

[crimsonGST]

AGH.
WHY THE 6th! the car annual car and truck show is that same day here in LC. Maybe next time...