67 300 440 Boiling

[Cortez]

I took the misses out for a quick spin and heard the antifreeze actually boiling. A lil bit came out of overflow hose. I wasn't sure if this is a thermostat or radiator issue. A fella at work said it needs burped????

 

[commando1]

When cold, remove radiator cap, start engine, let it get up to operating temperature.
Watch air get purged from system.
When purging stops, turn engine off, add coolant.

 

[Snotty]

If you have the radiator that did not come with an overflow bottle, if you fill them to the top they will blow out - every time!

 

[Cortez]

When cold, remove radiator cap, start engine, let it get up to operating temperature.
Watch air get purged from system.
When purging stops, turn engine off, add coolant.

So I let it run until the antifreeze starts to come out? Then let it cool and top off...i leave an inch or two from top free correct?

 

[Polara_500]

Typically about 1-1/2" from the neck.

 

[Cortez]

Thank you sir

 

[Cortez]

All good thanks