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D7E-48A won’t start

Jchute · 2026-07-23 10:29

Having some issues with a D7E that won’t start. It just died one day and wouldn’t restart. We found the governor shaft broke the ears at the injection pump. So we removed the governor and changed the shaft. Reinstalled lining up the timing marks and injection pump can only go one one way. Now we have good fuel at the injectors but still no start. I had the valve covers off to check valve and have found there is lots of blow by. Any suggestions one which way to go next is it low compression or just still a fuel issue. Thanks

Replies7
  1. #1Welder Dave2026-07-23 14:27

    Does it smoke when cranking it over and is it turning fast enough?

  2. #2Jchute2026-07-23 14:34

    Yes we removed and charged the batteries it seems to crank over good. There is some smoke while cranking. We used some either on it with no result.

  3. #3epirbalex2026-07-23 17:07

    Was it the governor problem that stopped the motor ? If it was and nothing else has changed the diesel it turning up at the wrong time . Is the valve lifter engaged , presupposing its a converted motor to direct electric .

  4. #4Old Magnet2026-07-23 20:27

    Low oil pressure???? Governor limit plunger will not retract if oil pressure is to low thus preventing the governor from opening the fuel rack.

  5. #5chidog2026-07-24 14:40

    And what happens with starting fluid?

  6. #6Welder Dave2026-07-24 19:13

    How much smoke and what colour? Did it try to fire with starting fluid?

  7. #7pittsburgh cat man2026-07-24 19:31

    This may sound silly but is the compression release on?