As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAO - ON FLIGHT TO MAO, AIRCRAFT DIVERTED TO SJU DUE TO EXCESSIVELY HIGH ENGINE FUEL PRESSURE ON NR 1 AND NR 4 ENGINES. REMOVED NR 1 AND NR 4 ENGINE FUEL TEMP REGULATOR FILTERS. FOUND TO BE CLOGGED. INSTALLED NEW FILTERS AND ENGINE RUN-UP CHECKED NORMAL. AIRCRAFT CONTINUED TO MAO WITHOUT INCIDENT. UPON RETURN TO MIAMI, ALL 4 FUEL TEMP REGULATOR FILTERS WERE REMOVED AND REPLACED AS A PRECAUTIONARY MEASURE.