drain coolant
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Mountain Pass
Joined: Sep 2010
Posts: 136
Likes: 0
drain coolant
I am sure this have been gone over, but in searching, I can't find it so bear with me. I removed the radiator and wanted to flush the whole system while the hole in the rad. was getting fixed. I removed the lower rad. hose, and a 3/8 brass plug from each block. There is still coolant directly under my thermostat. How do I get it all out? Thanks for replying
85 ford 6.9
85 ford 6.9
Lead Driver
Joined: Dec 2006
Posts: 6,496
Likes: 94
From: So. Jersey
There are block drain IIRC 9/16" wrench to remove them either side. Also the rear oil cooler/oil filter housing has a plug you can also remove. Once removed you can replace with pet***** to ease coolant changes in the future.
New User
Joined: Oct 2010
Posts: 17
Likes: 0
Im new to diesel as well and would like to flush the system on my 7.3 idi so that i know what coolant and sca is in it. can i just use the standard flush kit sold at the auto parts store? The kit provided a t that cuts into your inlet heater hose and is flushed with a garden hose.
Fleet Owner
Joined: Jan 2004
Posts: 26,007
Likes: 575
From: Brentwood,CA
Im new to diesel as well and would like to flush the system on my 7.3 idi so that i know what coolant and sca is in it. can i just use the standard flush kit sold at the auto parts store? The kit provided a t that cuts into your inlet heater hose and is flushed with a garden hose.
Those kits a prone to failure!!! Just save the money and remove the heater hose and just use a garden hose with a nozzle on it to flush it.
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Mountain Pass
Joined: Sep 2010
Posts: 136
Likes: 0
That's what I did, the garden hose through the heater hose. I had the two block plugs out, I just didn't have the heater hose figured out yet. Thanks for the comments
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Postmaster
Joined: Apr 2009
Posts: 4,086
Likes: 1
From: Malahat/Cowichan Valley
do you guys think that the small amount of hose water is an issue or should it be flushed with demineralized/distilled water after the garden hose flush? I have well water here that has a lot of iron in it.
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