Coolant Bubbles When Revving
Coolant Bubbles When Revving . Revving does make 1 big bubble sometimes. Trying to bleed the cooling system, bubbles keep appearing. Water sound behind dash. Coolant leak World from www.tacomaworld.com Small bubbles in coolant, not constant or violent like you would see with a head gasket failure. The bubbles indicate that the cooling system is seeing an increase in air pressure. Corrosion within the radiator is one of the leading reasons that coolant leaks.