Preventing Jeep Engine Fires - Fire Proof 4.0L
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Supposedly the four-holes in the new injector will provide a finer mist than the stock one-hole injector. We didn't notice a mileage change on our otherwise stock MJ, but we did notice the idle smooth out. Of course, that could have been from the fact that all of the stock injectors were visibly clogged and gummed up somehow. View Related Article
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