towing a trailer ,,first time in a long time,,,stopped to fix a tire,  went to start it up and extra long cranking ,finally started misfiring then smooth as silk ,check engine light on code  po0088 ,Finish my road trip, it made it ! starting fine ,the next morning...10 second before starting,,,runs fine  ,here a clicking noise from the high pressure pump  ,,,,,recall ?   possible crank trigger ?