Resolved Boost leak

[91lzer]

Today I tried to test for boost leaks for the first time and I connected a rubber hose to the turbo intake with a pvc cap and a valve stem I. It. But I tried to pressurize to 20 PSI and it wouldn’t hold whatsoever. I sprayed any possible leak sites with soapy water such as all boost hoses, TB, intake manifold, intercooler and couldn’t find any leaks. I thought the intake and exhaust valves may be open at the same time so I turned over the engine with the same result

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[CKOPOCT]

Not trying to be insulting or silly; it will take a little time for the system to pressurize to 20psi, just like it takes time to fill a tire. Have you held the valve long enough to pressurize it? I have a compressor that lets me vary the output pressure, so I just lock the fill hose on the valve stem and start spraying the joints...

 

[91lzer]

Not trying to be insulting or silly; it will take a little time for the system to pressurize to 20psi, just like it takes time to fill a tire. Have you held the valve long enough to pressurize it? I have a compressor that lets me vary the output pressure, so I just lock the fill hose on the valve stem and start spraying the joints...

I held it for quite a while and it didn’t pressurize. But after a while I found that my turbo to intercooler piper was completely split causing a leak so big that yo couldn’t hear it come out

 

[steve]

I found that my turbo to intercooler pipe was completely split causing a leak so big that yo couldn’t hear it come out

Congratz, You found your first leak. Very possible it's not the only one.

 

[91lzer]

Congratz, You found your first leak. Very possible it's not the only one.

Hahaha, I found just a few on my Throttle body, there’s a leak coming out of the hole circled in the pic. What is that?

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[19Eclipse90]

1G BISS Adjustment

 

[steve]

The o-ring around the screw has likely turned into dust. Good thing is it looks like one of the original metal BISS screws instead of the later plastic ones the strip out when you put a screwdriver on them.

Mitsubishi OEM Biss Screw Set for DSM/3S

OEM biss screw set for 1G/2G DSM, GVR4 and 3000GT Stealth models. STM offers this kit comprised of all OEM Mitsubishi factory replacement parts. Blah blah blah blah. Includes the biss screw, cap and o-ring for the throttle body speed control idle.

stmtuned.com

The caps always seem to vanish as well.

 

[91lzer]

The o-ring around the screw has likely turned into dust. Good thing is it looks like one of the original metal BISS screws instead of the later plastic ones the strip out when you put a screwdriver on them.

Mitsubishi OEM Biss Screw Set for DSM/3S

OEM biss screw set for 1G/2G DSM, GVR4 and 3000GT Stealth models. STM offers this kit comprised of all OEM Mitsubishi factory replacement parts. Blah blah blah blah. Includes the biss screw, cap and o-ring for the throttle body speed control idle.

stmtuned.com

The caps always seem to vanish as well.

That photo is from google. There is no screw there in my throttle body

 

[chrisman287]

That photo is from google. There is no screw there in my throttle body

So you definitely need the set. I would check extremepsi as well as jnz tuning for it.