2.8l Cylinder Head Bolts?

[Big Jim M]

You didn't say that!

The problem with that is the thermostat on the 2.8 is on the hose coming into the engine off the lower radiator hose not on the upper radiator hose. The bypass circuit get a bubble that is a pain to burp.

What you wrote CANNOT work! How can a thermostat get hot enough to open and then stay open on the INTAKE from the radiator?

Granted I have NOT worked on a 2.8, but, That ain't right.

Big Jim

 

[AndyB.]

What you wrote CANNOT work! How can a thermostat get hot enough to open and then stay open on the INTAKE from the radiator?

Granted I have NOT worked on a 2.8, but, That ain't right.

Big Jim

He's correct. The thermostat is in a constant cycle of opening and closing. The bypass circuit is what heats the thermostat to open it, the cooler coolant from the thermostat closes it, bypass opens it again....

It was this way from '83 until December of '85 for 2.8 Rangers, until Ford relocated the thermostat to the top of the I take.

 

[adsm08]

He's correct. The thermostat is in a constant cycle of opening and closing. The bypass circuit is what heats the thermostat to open it, the cooler coolant from the thermostat closes it, bypass opens it again....

It was this way from '83 until December of '85 for 2.8 Rangers, until Ford relocated the thermostat to the top of the I take.

And then for some incomprehensible reason they went back to this design on the 2.0/2.3/2.5 Duratec engines. Some have a bleeder hose near the back of the head, some don't. The ones that don't are almost impossible to bleed fully without a vacuum filler. Most times the air eventually moves to the heater core and gives a gurgling noise when you accelerate.