?how to lower water level in block

Discussion in 'Troubleshooting & Diagnosis' started by Chuck71RS, Jan 18, 2017.

  1. Chuck71RS

    Chuck71RS Veteran Member Lifetime Gold Member

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    Without removing the block drain plug, can the water level in the block be lowered below the level of the water temperature sensor? (Looking to remove the senor).
     
  2. BigBlock73

    BigBlock73 Veteran Member Lifetime Gold Member

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    Draining the radiator should drain most of the block as well
     
  3. fbody_mike

    fbody_mike Veteran Member

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    Yeah, I don't like disturbing those drain plugs either, it always feels like I am tempting a leak or stripped threads. I just open the drain on the radiator and let it all pour out like was mentioned above. I would just add that using a jack to raise the rear will also help to empty the block.
     
  4. Green hornet

    Green hornet Veteran Member

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    Not sure what year car yours is and how much room you have around the sender / engine compartment but I have replaced mine in my 70 without draining the coolant at all. You have to have everything ready in front of you. As you pull the old sender plug the hole with a finger at the same time. Grab the new sender remove finger and install. You have to be quick but I did it and lost less that a quart of fluid. Beats draining the system and refilling plus the mess associated with that. Hope this helps.
     
  5. camarolife78

    camarolife78 Veteran Member

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    This is how I do it as well!
     
  6. tom3

    tom3 Veteran Member

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    And pinch off the line to the puke tank, helps to lock the system when no air can get in.
     

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