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The firt major issue is if you leave it that way you run the risk of sucking out the head and then your problem becomes more expensive to fix.You also can lose gas mileage which is what happened in my car before i sucked the head out and destroyed the engine completely. Longer you let it sit that way the worse it will get First problem is passing emmissions testing. Second depending where the leak is you might have a problem with rough running or decreased performance. This is not a critical fix now item but you should get it done when you can.

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Q: What kind of problems will you have if your Manifold is leaking?
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