Should waste gates release any air at idle?

[kcc0521]

I was under my car while it was running with my new hellion low mount kit and one of my waste gates is blowing a very small amount of air out the dump. I am wondering if this is normal or do I need to pull the gate and inspect it.

Sponsored

 

[Kona 18]

Wastegates job is to send excess exhaust out the dump to control boost and to stay shut in order to help build boost. A leaking waste gate may cause your turbo to spool slower as the leak creates a pressure drop in the manifold and will result in a slower spool up until you reach "full" boost at which point the waste gates open and close to maintain that boost and it's less of a issue. If it's a very minor leak and you aren't seeing it affecting you spool times, I'd ignore it how ever that's me and im lazy sometimes. If it was someone else car I would say take it apart and see if it's leaking around the v-band or through the waste gate valve seat or whatever it's called(I dont recall)

 

[80FoxCoupe]

It should not open until desired boost level is reached.

 

[Kona 18]

It should not open until desired boost level is reached.

I understood his question as it's closed, but leaking a little bit of exhaust, which would be different from it actually being open. Maybe something got caught in the seat, v-band is loose, or it's not shutting 100%

 

[kcc0521]

I understood his question as it's closed, but leaking a little bit of exhaust, which would be different from it actually being open. Maybe something got caught in the seat, v-band is loose, or it's not shutting 100%

Yes it is just a slight amount of air coming through it. I might blow some air through bottom port to force it open and see if any trash falls out.

 

[80FoxCoupe]

I understood his question as it's closed, but leaking a little bit of exhaust, which would be different from it actually being open. Maybe something got caught in the seat, v-band is loose, or it's not shutting 100%

Agreed

 

[kcc0521]

Pulled the gate back off the car and went through it. Nothing looked wrong but it quit leaking when I put it back together.

Sponsored