So my EGR and DPF were recently replaced at Dealer all under emission warranty (39k miles), but since then I’ve had fuel smell in truck and worse mileage. No fuel drips in driveway or upon visual inspection. Thought maybe bad luck that an injector is leaking, but am now wondering if in replacing the EGR a hose wasn’t tightened or valve cover removed and not replaced correctly. Truck is back with dealer right now to fix an oil leak off two hoses coming from the EGR that they replaced but didn’t put back on correctly and to diagnose the fuel smell. Am thinking the fuel smell after they replaced the EGR isn’t a coincidence. What fuel related components get removed when replacing an EGR or DPF?