Page 1 280-ZELECTRONICFUEL INJECTION • THEORY• TROUBLESHOOTINGPage 2 280-ZELECTRONICFUEL INJECTION • THEORY• TROUBLESHOOTING Revised November 1975Page 3 Page 4 SECTION I FUEL INJECTION THEORY OF OPERATIONPage 5 Page 6 1Page 7 2Page 8 3Page 9 4Page 10 5Page 11 6Page 12 7Page 13 8Page 14 9Page 15 10Page 16 11Page 17 12Page 18 13Page 19 14Page 20 15Page 21 16Page 22 17Page 23 18Page 24 19 FUEL INJECTION ELECTRICAL SYSTEMPage 25 20Page 26 21Page 27 22Page 28 23Page 29 24Page 30 25Page 31 26Page 32 27 SECTION II FUEL INJECTION TROUBLESHOOTINGPage 33 28Page 34 29Page 35 30Page 36 31Page 37 32Page 38 33Page 39 34Page 40 35Page 41 36Page 42 37Page 43 38Page 44 39Page 45 40Page 46 41Page 47 42Page 48 43Page 49 44Page 50 45Page 51 46Page 52 47Page 53 48Page 54 49Page 55 50Page 56 51Page 57 52Page 58 53Page 59 54Page 60 55Page 61 56Page 62 57Page 63 58Page 64 59Page 65 60Page 66 61Page 67 62Page 68 63Page 69 64Page 70 65Page 71 66Page 72 67Page 73 68Page 74 69Page 75 70Page 76 71Page 77 72