I already have another cracked exhaust manifold. This is the 2nd one that has cracked since I bought it. The first time it happened, it was a small crack which also had a ticking sound. The current crack is larger and makes a rumbling sound, which causes my engine to sound very powerful. My repair shop told me the crack is so small that I shouldn’t be concerned about it causing any damage to the engine. Also, I live in an area where we never have cold weather. So I just endure the rumbling, but when I have clients with me in the car, it can be annoying to them. Can you give me advice as to how to fix this problem?
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