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Radiator Leak Test, Removed From the Vehicle

WARNING: This page is about a different car, the 2003 Mazda Tribute, 2002 Mazda Tribute, and 2001 Mazda Tribute. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
  • Never leak test an aluminum radiator in the same water that copper/brass radiators are tested in. Flux and caustic cleaners may be present in the cleaning tank and they will damage aluminum radiators.
NOTE:
  • Always install plugs in the oil cooler fittings before leak testing or cleaning any radiator.
NOTE:
  • Clean the radiator before leak testing to avoid contamination of tank.
  1. Leak-test the radiator in clean water with 138 kPa (20 psi) air pressure.
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