Did you "burp" the hoses,(purge the system),when you added new fluid? I didn't,and my truck ran fine,for about a month,(after re-building the head). I drove it over 200 miles in that first month,without any problems. The day before it over-heated,i hauled a 4-ton load of railroad ties,and the gauge read the same as the ammeter. Right in the middle of the op. temp. The next day,i gave the guy,(that wanted the r.r ties delivered,a ride into the nearest town,which was only 6-miles. No problems going to town,But,on the way back, after about two miles,the gauge slowly climbed steadily,until,3-miles later,it as almost "pegged". Luckily,I pulled over,in front of a friend's house,who had a garden hose long enough to reach the place where I parked. By the time he purged the system,to rid it of air pockets,I had NO coolant left,(just straight water),but the gauge stayed below the 1/2,(cool side of operating temp.), mark. I bought 2 gallons of premium coolant immediately,and re-filled the system. I made sure to fill the radiator,(engine RUNNING at about 1,200 R.P.M.),and squeeze the upper radiator hose.This helps rid the system of trapped air bubbles,which prevent the coolant from circulating properly). It takes between 15 minutes,to 1/2-hour,but it's definitely worth it. I didn't put the cap on,until I didn't see a bubble,for 5-minutes.you'll need to wear gloves,or wrap a rag around the hose,'cause it'll get HOT. That was two Summers ago. I haven't had any trouble since then. Hope this helps.
Last edited by wetwilly5757; 10/02/2013 4:01 AM.
