kuha ka lighter sindi mo then trace the fuel line. pag umapoy andun leak ehehehehe!

seriously, it could be anywhere. di ko alam mag-trace ng leak sa gas engine, puro diesel hawak ko dito kasi. same thing din sa diesel kung natutuyuan ng fuel sa lines most probably may leak. may gamit kami UV light kita agad ang diesel pag may leak (dapat syempre in the dark). ewan ko sa gasoline kung effective pero kung meron ka nung UV light na gamit pang-detect ng fake na pera pwede yun. dark room (or night time, or use a canvas/rain coat/etc to cover the area you are checking), turn On fuel pump then see under UV light. sa diesel it becomes light green color under UV, ewan ko for gasoline. or just follow your nose na lang siguro. pag wala sa lines baka sa pump na siguro yan.