How do i fix exhaust manifold leak

Hello, the title regarding the exhaust manifold leak is one statement, and then your question about your gas "running out more" and a bad smell -- May or may not be related. First, you need to repair the exhaust leak. If you have a manifold leak, you're allowing oxygen in, which can create a flaw in the heated oxygen sensor readings which then in turn affect fuel trim settings -- delivering, perhaps, more fuel than needed to the engine, which can cause performance issues. How do you fix it? I'd say seek guidance from a local shop near you who can evaluate what is wrong and then provide a quote to fix it. www.repairpal.com/repair-shops The shop, after exhaust leak repair, can then perform an engine performance diagnostic test too, surely.