1996 Ford F150 I6 Exhaust Leak on One Cylinder
Under acceleration my 1996 Ford F150 I6 has what sounds like an exhaust leak on one cylinder. At idle it is quiet. One mechanic said is was probably the secondary air tube that has a tube going to each cylinder to pump aid in to help with combustion. Another said it was likely the exhaust manifold. Neither wanted to do the job for fear of rusted bolts and having to charge too much. Any ideas?