Jacobs exaust brake leaking

[BradG]

My ex brake just started wistlen like crazy the other day, loos like its leaking between turbo an brake but clamp still tight and in tact. wondering if anyone knew if there was a gasket in there or if something is cracked before i pull apart.

 

[Dieselman359]

I don't know if your running an aftermarket exhaust manifold, but usually when mine starts whistlin' its the manifold bolts on #1 that loosen up. Take a wrench and check them, its cheap. Also open the hood and rev the motor up, you should be able to see some smoke where its leaking.

 

[Shadrach]

There should be a gasket in there, Cummins p/n 3929058. Shadrach