purge system
1,205

Asked by bandit31so Feb 21, 2015 at 08:15 PM about the Ford F-150

Question type: Maintenance & Repair

I have a 2001 f150 with a 4.6l can anyone tell me the correct procedure to purge the air
out of the system. thanks

1 Answer
74,390

OJ answered 9 years ago

I take it you are speaking of the radiator system, correct? Drain radiator. fill with coolant. Start engine. Be patient. The engine will have to obtain operating temp for the thermostat to open. The engine will burp meaning more coolant is entering the engine and air escaping. keep refilling up to the "full when hot" line.

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