Check your exhaust manifold bolts - the ones on the the outer ends of the manifolds . . . bet you find they are loose, because they are broken ! Once the manifold warms up, then it expands and reduces the exhaust leak . . .known issue . . . google it, or get on the ramtruck forum and you will see . . .

Last edited by a12rag; 03/08/19 04:10 PM.