Check your fuel pressure from the pump to the carb. The Weber carbs like to run between 2 1/2 to 3 psi. Stock pumps on the 2.6 (your signature doesn't indicate what engine) are rated between 2.8 and 4.2 psi. Too much pressure can cause leaks. See my recent reply to a post (Weber Conversion).

'97 Jeep Cherokee XJ, Country, Black/Gray Leather, 4.0L, 4WD Command-Track, AW-4 Auto, 3.55:1 Gears, PowerTrax No-Slip Locker, Hi Country Tow Brackets, Spectre Air Filter, 235X75R15 Goodyear Wranglers, 126K miles