is there any way that i can flush my radiator with out taking my thermostat off ? because i pourd a radiator flush and i keep on draining the radiator but theres still some stuff in there because every time i open the petcock from the radiatorwhite water comes out instead of cleer. any suggestion that i'll be able to doit with out taking the thermostat off so that i can get everything out of there ?

 

disconnect your lower radiator hose, and take off one of the egr space coolant lines, this will allow air in to the top of the motor and allow everything to drain out

 

this should be done while the engine is off right ?

 

since your draining the coolant out.. i would say its better to leave the motor off

 

Thanks Addermk2....this will remove everything that remains in my water pump also right ?

 

What about the block drain? Don't the 5.0 blocks have a block drain?

I just drain my radiator and add coolant every 6 months. It seems to stay clean that way.

 

you flush the entire system with the engine running there is no point really to just flush the rad. go buy the prestone kit at auto zone and follow the directions.

 

i would take one of your heater core lines off get a water hose and hold it on there with the engine running and the radiator cap off till everthing is nice and clear then pop off that lower radiator hose