Boost leak when cold outside and climbing hills.

@Goodysnap

Can you provide a leak to a good smoke machine?

 

Smoke Pro® Total Tech®

This is the the one we have in the shop.The inflatable bladders are really nice and give a spot to enter the smoke.

 

Hey, grab a cigar and blow in a hose for all I care.

But the smoke will find the leak.......fast.

There are cheaper options out there......

 

I guess it just gets weak, and can't hold the valve closed anymore. Once it gets forced open, it dumps all your boost. Makes the turbo bark which is super hard on the shaft. Can even blow your induction off the front of the turbo, if the clamp isn't tight enough.

I unplugged mine to narrow it down, and that stopped it. But I don't think you can do it without going into limp mode, or derate. I've got an older ISX.

 

What did you unplug?

 

The two-wire underneath the EGR valve. Turn on key for thirty seconds first. Then unplug it. After it cured my turbo bark, I knew my EGR was failing. It would bark at wide open throttle. It should only do that if you cut throttle at high boost. Never at full throttle, though.

 

Yeah ive got a 12.7 and it started barking after coming off the fuel at high boost this week.....