got to thinking, is it possible to rig up some PVC fittings to attach to a garden hose and flush the coolant system through the bleeder valve ?

baring that most of the water might just flow into the radiator and out the drain plug would it exchange most of the old coolant from the system ??

think it would be safe to do this with the engine running or would too much air, via bubbles get into the system ??

 

Just either pull the lower rad hose or open the valve on the bottom of the rad. Keep it simple.

 

or pull the block plugs at the bottom of the cylinders

 

No. Also, the engine block holds like a gallon of coolant itself. The bleeder hole isnt enough volume to push all the coolant out of the engine appropriately. It's like a pin hole compared to a sewage drain that the lower hose would provide.

Agree. Messy, but simple and effective.

Yikes. This wouldn't eveer be on my list of choices! What a paint to even find the plugs to buy and then to get them in properly with the engine in place? Also, the freeze plugs don't go to the bottom of the water troth, so even removing a freeze plug wouldnt drain all of the coolant.

If you want to make sure all colant if flushed, pull off the lower radiator hose and fill the system back up wih just water. Get engine hot so it circulates the water and pushed the coolant out of the block. Wait for it to cool down some and pop off the lower hose again. Repeat once more if your ****.
Total coolant system takes about 4.7gal so, youll want to pour in atleast 2 full gallons of concentrated coolant if not 2.5gal before topping off with water.


5.7L (Mopar Antifreeze/Coolant 5 Year/100,000 Mile Formula)or equivalent. 18.7 qts 17.7 L

 

Don't think he was referring to freeze plugs there are drain bolts on either side of the block that you can open up to drain the block

 

I pulled the plugs on mine when I did the first flush a few years ago, makes the whole thing much easier and more effective, no-----I didn't mean the freeze plugs.