Help!!!!

[MDNUSA]

2007 2500 6.7 cummins. I used my engine brake yesterday. Now my brake pedal is super soft and I think I have a brake fluid leak just above the fuel tank. The jake brake may not be related but I figured I'd share that info just in case. Any ideas? Thanks

 

[crash68]

The using the exhaust brake wouldn't have anything to do with the hydraulic brakes.
If you think your brake line is leaking, clean up whatever fluid is on the fuel tank now, then pump the snot out of your brakes and look for fluid.