Damaged Actuator ?

[conan7772]

The other day was on boost then suddenly lost all, black smoke galore.

I've checked all the hoses for leaks, they seem ok.

Turbo still spools but not as quickly.

I have a Turbosmart boost-t with the gate still in, wound all the way down.

It sounded like the gate stuck, then suddenly let go, surging the shit out of the actuator.

Is it possible this surge damaged the diaphram ?

[Ben C34]

Boost leak. Pressure test.

[YangLIU]

AFM?

[dermy]

Popped a cooler hose?

[conan7772]

yeah I'll start by changing all the vac line with silicone tube and hose clamps.

found a small split, cut it back but still losing boost somewhere.

I do have a compressor, how do you block off the intake to pressure test ?

Where's the best place to connect compressor.

'cheers

[datmoo]

Had the same problem the other day.

Put my boost leak tester here:

Had a boost leak on my SR 1600 and was a real high pitched squeal but with the stag not so much.

I ended up using my hand to feel for air and eventually found it when I took the front bumper off.

Ended up being the intercooler intake pipe hose clamp.

[scotty nm35]

Boost T all the way down? No wonder your car is surging, what boost is it running? Have you double checked the boost gauge is reading correctly?

[conan7772]

Yeah all the way anti-clock, means it opens at 3psi.

I just read somewhere you're supposed to wind 3 clicks off the bottom.

I had it wound all down, maybe causing the ball to catch in the boost-t.

Seems better now, But I'm pretty sure the vac lines are leaking.

You can pull them off easily without pressing the clamps.

Got some silicone hose and worm drive clamps coming.

[scotty nm35]

Silicone is a lubricant, it won't help the silicone will pop off easier. Sounds like you are running much more boost than you think...

Make sure you cable-tie all hoses, most are not barbed.