Fuel Injection System - PGM-FI System: Testing: Notes

NOTE: Before testing or trouble shooting, ensure that other items which affect engine performance are functioning properly and adjusted to specification. Check valve clearance, air cleaner and PCV valve. In addition, check ignition timing, function of vacuum and centrifugal advance (if equipped), and condition of spark plugs. If "CHECK ENGINE" or "PGM-FI" warning light on dash is illuminated, or for additional testing information on computer input and output devices, see appropriate COMPUTERIZED ENGINE CONTROL article.