Air leaks in intake hoses n dirty plugs.
Low Current draw could be poor engine ground or dirty connectors on major components ie alternator n starter. If old gas in system, maybe injectors are gummy. Could pull n see how they are spraying. Or hop in n blast it up road. May just need to clear out the acorns.
Peter Inshaw 59 Touring Spider 2.0, 63 Spider 1600, 67 GTV 1750, 67 Giulia Super Project, 73 Berlina TS, 91 Spider Veloce, 2018 Stelvio TI Sport