Don't know how this would have occured. The sad thing is that I have never taken my Jeep off roading and for a fuel line to get dismounted off the fuel rail and within time start to rub with the heated engine, that brings a concern to other Jeeps like mine that can potentially catch fire if the leaking fuel catches a flash point. Good thing this didn't happen in my situation but brings a big concern to those other vehicles that it can happen like it did with mine.