tomtaras

1967 302 ENGINE
3 CORE RADIATOR
3.5 IN FAN SHROUD
NEW WATER PUMP
NEW HOSES
NEW THERMOSTAT
DROVE VEHICLE 6 MILES STARTED TO OVER HEAT PULLED CAR IN GARAGE AND COOLANT STARTED TO COME OUT THE OVERFLOW HOSE AND THE UPPER RADIATOR HOSE WAS MAKING NOISES LIKE A PLUGGED DRAIN ANY IDEAS

pure_kaos

Could be a few things, could be any one of those new parts are bad, could be a clog in the radiator. Could be a clog in the intake, warped head. I'd start with a complete flush.

barnett468

flushing it is completely pointless at the moment.

you need to post a LOT more info starting with when this first occurred etc.

if it did not run hot beofre you installed those parts, it could be caused by something as simple as an air pocket when you filled t up. happens often on fords.

Derf00

Yep more details definitely. If the over heating occurred after the updates there are a few things like the air bubble Barnett mentioned or a reverse rotation water pump, thermostat stuck in backwards, , etc. Worst case if the problem existed before, engine is plugged up bad.

08'MustangDude

You ALWAYS test a thermostat before installing it. I have gotten four that were bought,
new, that were bad off the shelf. Boil water, microwave or stove, then toss the T-stat
in the water to be sure it opens.

You may have installed it backwards. It will install in either direction, but the spring side
faces the block. I know it seems like it should go in the other way, to open in the same
direction as the flow, but it doesn't.


Then, there could be air pockets. When I fill, I squeeze the release the lower rad hose as I am putting
coolant into the system, till the radiator is full.

When you fill, you should remove the temp sensor, this is the highest point in the cooling system, and
as you add coolant, air displaces out the hole.

To bleed the air out, loosen the sensor with the hot motor running, and you will see any air
burping out. Do it until it stops making air bubbles from the threads. Tighten it up when you
are done.

We used to drill 1/16th" holes in the t-stat so air can pass through to aid in burping the system.

barnett468

TOMTARAS, do NOT do this with the engine HOT and RUNNING, there is absolutely zero point to it and it could be dangerous. You can SAFELY do it with the engine COLD and OFF.