As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PDC WALK AROUND FOUND #2 ENGINE LEAKING FUEL. FOUND HPTACCV LEAKING 15 DROPS A MINUTE. PERFORMED #2 ENGINE IDLE RUN FOR 5 MINUTES. NO LEAK FOUND AFTER ENGINE RUN. GROUNDED - YES. REMOVED AND REPLACED HPTACC VALVE ON #2 ENG REF B737-800 AMM 75-21-01. ALL INSTALLATION AND OPS /LEAK CHECKS GOOD.