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H2o pressure

Discussion in 'General 4Runner Talk' started by Little Jim, Feb 22, 2016.

  1. Feb 22, 2016 at 7:23 PM
    Little Jim

    Little Jim [OP] New Member

    Dec 21, 2015
    First Name:
    '90 4Runner SR 3.0 V6
    Remove rear side bumpers, deck plate mod, relocate rear window switch to dash, removed rear wiper
    Due to a water pump going bad, can I run my 3.0 with the rad cap loose to decrease pressure in the system and slow the flow of coolant?

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