Posted by andy r on December 04, 2013 at 15:54:20 from (75.91.149.15):
I drained and replaced the antifreeze on my farm pickup - a 2002 Dodge 1500 with a 4.7 this last weekend. I see there is a bleeder plug on top of the engine to release trapped air, but didn't know if it actually had to be used. I am familiar with bleeding the air on a Ford 3.8, but this 4.7 looks like it should bleed itself via the upper radiator hose. It did get hot after I added new antifreeze/water. I did check the thermostat in a pan of boiling water and it opens well. Took 15 miles to top out the temp gauge yesterday when the engine was cold and just started, but driving. I would let it cool down 10 - 15 minute, check the antifreeze level after I got the pressure off and go again. Seems like it only took 5 miles to overheat again after the engine was hot. Did that a couple times before I got home. Sure thought is was the thermostat but as I said it opens well in a pan of boiling water. Seems like it really didn't loose that much coolant each time if any. I don't run it while overheated as I know the 4.7 engine will start to pop out the valve seat inserts if they get hot - that is what an expert engine rebuilder told me. Any ideas????? Do you really have to release any air with the bleeder? Thanks
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Today's Featured Article - Grain Threshing in the Early 40's - by Jerry D. Coleman. How many of you can sit there and say that you have plowed with a mule? Well I would say not many, but maybe a few. This story is about the day my Grandfather Brown (true name) decided along with my parents to purchase a new Ford tractor. It wasn't really new except to us. The year was about 1967 and my father found a good used Ford 601 tractor to use on the farm instead of "Bob", our old mule. Now my grandfather had had this mule since the mid 40's and he was getting some age on him. S
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