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Summary, Coil voltage/missfiring. by Ralph
Post New Message Joe and Sam et all,Summary of where I am at. 1978 Dodge MH,440,Sportsman Van with MH chassis. Intermittant misfiring on all cylinders. Engine runs but backfires with no power. Firing is OK for about one second and then all cylinders missfire for about the same time based on timing lite. Replaced dual ballast resistor,ECU,distributor cap,plug wires and tried coil substitute. Occasional HT voltage shock thru ignition key and carb when running. All wiring grounds (I think) cleaned and OK. Coil voltage at both terminals 12V with ECU disconnected. Tried jumper cable from engine block to battery negative-no change. Voltages between battery and engine block and battery and ECU surface are both 12V. Now I think back I replaced spark plugs after the MH sat for 6 months. 6 months ago it was running fine. Champion RV12YC were replaced with NGK UR5 which are eqivalent according to the NGK catalogue.I think they are a resistor type. Are they OK?
All Messages in ThreadAuthorDate
Post New MessageSummary, Coil voltage/missfiring. Ralph 8-1-02  
  Reply to MessageRe: Summary, Coil voltage/missfiring. Ralph 8-2-02  
  Reply to MessageRe: Summary, Coil voltage/missfiring. Joe 8-1-02  
    Reply to MessageRe: Summary, Coil voltage/missfiring. Bob 8-1-02  
    Reply to MessageRe: Summary, Coil voltage/missfiring. Ralph 8-2-02  
      Reply to MessageRe: Summary, Coil voltage/missfiring. Sam Watson 8-2-02  
        Reply to MessageRe: Summary, Coil voltage/missfiring. Ralph 8-3-02  
          Reply to MessageRe: Summary, Coil voltage/missfiring. Sam Watson 8-4-02  
            Reply to MessageRe: Summary, Coil voltage/missfiring. ralph 8-4-02  
              Reply to MessageRe: Summary, Coil voltage/missfiring. Ray 8-4-02  
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