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Message: <blockquote data-quote="RCBL" data-source="post: 328175" data-attributes="member: 15145">Hi all, I know this reply is late but I hope I can contribute my little experience for all E36 owners to learn (as I have learn from your contributions and experiences). Exhaust manifold cracking is an extremely common problem with all E36 and it's very annoying! Ur car sounds like a motorboat each time u floor the accelerator. Go to a welder and remove the exhaust manifold from the bottom (u need to raise the car on a platform). The leak or crack is usually near the joints connected to the engine and it is usually not visible to the naked eye. In fact, the welder used a small rubber hose to determine and confirm the leak (one end of the hose is placed near the suspected source of leak at the joint and the other end to feel any air pressure caused by the leak). Under 30 minutes and under RM100 and ur car will sound just like new. I had to live with the motorboat sound for a few months as my mechanic suspected that it was a leaking gasket caused by a broken bolt/screw. Solution was to hoist the engine and drill the broken bolt/screw out. Cost? At least RM1000 (high cost due to labour intensive) and a possible 2weeks hospitalisation! Was about to send my car in until I sought 2nd opinion from another mechanic from Segambut. Hope this will help some E36 owners...cheers!!</blockquote>