jfz80
Cruisin’
- Thread starter
- #1,821
youll likely be a lil strong on the coolant but no harm. 50/50 now, drain 2 would yield adding 2 pre mix back or 1 H20 1 coolant.
Still way overthinking this one. Read the posts on 80 tech too. Go ahead and pull drain block, and really with system open would be a great time to flush heater core as well. I know you were trying to be quick and simple.... but day 3 now and your right there so might as well knock it all out at once.
Block drain is easy.... lift the front driver wheel skirt and look straight at block behind the shock tower. its the bolt in the block not bolting anything on.
Personally i have always drained the block and rad completely, filled with water, ran to temp, drained and filled both again. repeat.
You can leave just water in there for a day at a time to make it easier to fit drainings into life's schedule. Shoot, Ill usually dump and fill twice and then run a hose into the top radiator and let truck warm up and alternate draining from petcock and block drain letting the water pump help flush all the junk out. Button up and fill the block from upper rad hose, then fill the rad. burp system and monitor for next few days.
Izzy's writeup makes it almost foolproof and I added a pic or two there. Not all of this is needed but one way to do it.
flushing rad sys
Izzy's amateur hour
flushing heater core (with pics on page 3 of the block drain)
Heater Core Flushing - OWNED!
block drain, USDS
https://forum.ih8mud.com/attachments/image-jpg.1147753/
Still way overthinking this one. Read the posts on 80 tech too. Go ahead and pull drain block, and really with system open would be a great time to flush heater core as well. I know you were trying to be quick and simple.... but day 3 now and your right there so might as well knock it all out at once.
Block drain is easy.... lift the front driver wheel skirt and look straight at block behind the shock tower. its the bolt in the block not bolting anything on.
Personally i have always drained the block and rad completely, filled with water, ran to temp, drained and filled both again. repeat.
You can leave just water in there for a day at a time to make it easier to fit drainings into life's schedule. Shoot, Ill usually dump and fill twice and then run a hose into the top radiator and let truck warm up and alternate draining from petcock and block drain letting the water pump help flush all the junk out. Button up and fill the block from upper rad hose, then fill the rad. burp system and monitor for next few days.
Izzy's writeup makes it almost foolproof and I added a pic or two there. Not all of this is needed but one way to do it.
flushing rad sys
Izzy's amateur hour
flushing heater core (with pics on page 3 of the block drain)
Heater Core Flushing - OWNED!
block drain, USDS
https://forum.ih8mud.com/attachments/image-jpg.1147753/