Step 9:
Bleed the system
P>It's probable that pockets of air will be in the
cooling system after you've refilled the radiator.
The system is self-bleeding when you follow these
steps:
- Start your engine, but leave the radiator cap
off so the pressure doesn't build up.
- Let the engine run until it reaches its operating
temperature of about 190F (88C). This'll take about
15 minutes.
- Turn on your heater and set the temperature
control to hot. This will circulate the coolant and
any air in the heater lines and core.
- Check the level of the coolant. You may find
that the level has gone down some. How did that happen?
The air trapped in the radiator kept the level artificially
high; when this air was released, it opened up more
space in the radiator, and allowed more antifreeze
into the system. Add more water and antifreeze, in
the same 50/50 ratio, to fill the space left by the
bled-out air.
- As the air bleeds out, the coolant may bubble
and spit from the opening on top of the radiator.
Use caution--that coolant is hot.
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