Radiator Filling procedures 4.6L (4V) DOHC
last time I tried to burp it, I noticed that the coolant resevour tank was alittle low so I attached a funnel to the cross over and attempted to fill, but I couldnt because coolant came out of the crossover into the funnel and it never went back in .. not sure what that was about
Did you allow the motor to cool completely?
For chronic overheating problems, consider performing a coolant system pressure test. The tool can be rented from most any local autoparts store.
There are also kits to test for hydro-carbons in the anti-freeze.
The fill procedures for the DOHC are
CRITICAL. It will over heat if not followed. The SOHC motor will self purge after a few hot/cold cycles. The DHOC will not self purge.
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From Ford service CD
Check all hose clamps for correct tightness. Make sure the radiator draincock is closed.
Place the heater temperature selector in maximum heat position.
Remove the pressure cap from the cooling system reservoir and the fill plug from the engine crossover tube.
CAUTION: Do not fill the cooling system through the reservoir only. Coolant will not enter the engine. Only the reservoir and the radiator will be filled and engine overheating will occur.
Add coolant into the fill neck on the engine crossover tube until coolant reaches the top of the fill neck on the cooling system reservoir.
Install the cooling system pressure cap on the reservoir.
Continue to fill the cooling system at the engine crossover fill neck until full.
Install the engine crossover tube fill plug.
WARNING: To avoid the possibility of personal injury or damage to the vehicle, do not operate the engine with the hood open until the fan has been first examined for possible cracks and separation.
CAUTION: If the engine temperature gauge does not move, coolant level is low in the engine and must be filled. Stop the engine, allow to cool, and fill the cooling system as outlined.
Run the engine until the thermostat opens (coolant flowing through the radiator lower hose becomes hot).
Stop the engine and allow to cool.
Add coolant to the engine crossover tube fill neck until the cooling system is full.
Install the fill plug.
Repeat the fill procedure if necessary.