Exhaust brake hissing?

[David Muench]

I just installed a BD exhaust brake this sunday. What a bear. Should of been easy enough, but it was missing a bracket and had a few other problems too. Anyway, I finally got it installed, and started to test it. It makes a hissing sound when I engage it. I figure it must be a leak at the clamp that clamps the brake to the turbo adapter. I took it for a test drive, and it still hissed, and although I've never ridden in a truck with an exhaust brake, it wasn't slowing me down as much as I figured it would. Got back and there was some smoke coming out in that general area.



At any rate, it was too hot to adjust last night, so I left it home today. I'll tighten up the clamp, but I don't want to over-tighten it. Should I tighten it until the hissing completely goes away? The only thing I have to reference is the crank and chrome show, and I don't remember theirs hissing (but maybe the microphones didn't pick it up).



Thanks for any advice. .

 

[carhauler]

Hissing noise at an idle is normal,Its a small amount of exhaust exiting through the small hole in the butterfly. I have a pac brake which you dont have to adjust ,BD as far as I know is adjustableyou may want to check that out too.

Having a six speed you should have plenty of retarding power,Have you tried downshifting with the brake on?

 

[David Muench]

Yep, and don't get me wrong, it does slow the truck down. But I hear people referring to the BD as throwing you forward in the seat when the truck's unloaded, and at this point it's more like a gasser slowing down.

 

[Dak - BD Power]

Dave, give BD Tech support a call at 1-800-887-5030, they can supply a solution to your problem...

 

[David Muench]

Great, I will when I get home. Hopefully they can send me the missing bracket for the control switch too.

 

[David Muench]

I fiddled with it today and it seems to be working well now. I think that smoke was some never-sieze burning off. I'm on the phone with BD now so they can decide if they or Piers will send me the missing . 25 cent bracket. Thanks all.