cody ryan

I've been hearing a weird ticking/crackling noise coming from my exhaust lately and and from what I've read it's most likely a exhaust manifold leak. I've checked the entire exhaust and didn't see any holes or broken bolts anywhere so I thought I'd maybe try checking to make sure all the bolts are torque to specs. What exactly should I be torquing them down to? Or does anybody have any other suggestions I should try?