91BUSARMY

Hey anyone, I have a 1997 F250 Powerstroke i am looking to change coolant and flush the system what is the best method to do so..? I was reading in a few other forums there are a few bolts on the block i have to open im really not to sure about the whole process.. thanks for all your help!

Mr. Gorniak you are correct it is more of an RPM thing and it does happen at between 1300-1500 rpm's. Mr. Amacker I will get to checkin those issues and let you all know thanks for the help it is greatly appreciated!

Hey everyone I have a 1997 7.3 Powerstroke with 167,000 miles on it when I am driving at between 10 and 30 mph or between 1000 and 2000 rpm it feels like the motor is surging what could this possibly be?