Does 5.9 cummins exhaust manifold come loose?

Yes, the exhaust manifold on a 5.9 Cummins engine can come loose over time due to factors like thermal expansion and contraction, vibrations, and improper installation. Regular inspection and maintenance are important to ensure that the manifold bolts are properly torqued and secured. If you notice exhaust leaks or unusual noises, it's advisable to check the manifold for looseness or damage.