Coolant Flush? - Toyota Nation Forum : Toyota Car and Truck Forums
89-95 Toyota Pickup/Hilux Discussion forum for the 89-95 Toyota Pickup/Hilux owners. NEW!

 1Likes
Reply
 
LinkBack Thread Tools Display Modes
#1 Old 04-18-2009, 05:08 PM
New TN User
 
Join Date: Sep 2008
Location: BC, Canada
Posts: 35
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
(Thread Starter)
Coolant Flush?

ok, i'm wanting to do a coolant flush on my 94 22RE. i've got the Haynes manual. i found what i believe to be the radiator drain plug, but i can't find the engine block drain plug. where the hell is it?

another thing, i bought a coolant flush kit from Lordco. it has the t-valve, hose adaptor etc. i'm supposed to connect the t-valve to my heater hose. i can't find the damn heater hose and the Haynes manual has no reference to it, only the drain plugs. are the toyota engines different?

anyone have step by step info and better pictures than the Haynes manual? i'm obviously not a very experienced mechanic.
Steelheadstalker is offline  
Sponsored Links
Advertisement
 
#2 Old 04-18-2009, 06:01 PM
Official TN Member
 
Join Date: Apr 2008
Location: Springfield, IL
Posts: 107
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
The engine drain plug on a 22RE it just below the exhaust manifold towards the back of the engine under cylinder 3 or 4, it is just a bolt. There are 2 hoses that go from the engine to the firewall, those are the heater hoses.
skunkboy is offline  
#3 Old 04-18-2009, 07:10 PM
Official TN Member
 
Join Date: Nov 2008
Location: Houston, TX
Posts: 105
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Here are a couple pics. Note that when you remove the plug you might have to stick a short wire in there to clear out the black gunk which has settled -- probably fipg.


desconhecido is offline  
#4 Old 04-18-2009, 09:57 PM
New TN User
 
Join Date: Sep 2008
Location: BC, Canada
Posts: 35
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
(Thread Starter)
right on. thanks guys. when i go to insert the t-valve, do i just pick one of the heater hoses, or is there a specific one to use? the Haynes manual mentions nothing of doing this, thus why i'm asking.
Steelheadstalker is offline  
#5 Old 08-09-2009, 04:00 AM
New TN User
 
Join Date: Aug 2009
Location: Phoenix
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 3 Times in 1 Post
iTrader Score: 0 reviews
answer

Hey well no one ever really answered this guy. I recently bought a 1992 pickup with a 22re and had the very same question - I searched and searched and it took me quite awhile to find a definite answer, but I figured it out. So I though I would be nice and help out the next person with this question.

Here are some pictures. The part labeled "3" is the heater valve - it links to the hot/cold lever inside the cab and controls how much hot water flows through the heater core. Therefore, this hose - "2" ( blue line) is the "heater core inlet hose". The hose numbered "1" (red line) is the outlet hose. Connecting a flush kit to this line would not flush the system properly, it would be forcing water from your hose in the wrong direction to the heater core.

The two hoses were zip tied together, and it was better to remove the zip tie to do this. In the second picture, you can see that I zip tied the outlet hose temporarily away from the area to avoid damaging it. You can see where I placed the "T". The third picture just shows the complete job - after I zip tied the hoses back together. Don't forget to open the heater core valve (by turning the heater to the highest setting), before flushing. This is critical. Also remove the radiator cap, and open the radiator drain valve. Turn the hose on and let the engine run until the water runs clear.

Hope this has helped someone else.





JoeAllie likes this.
thegtc is offline  
The Following 3 Users Say Thank You to thegtc For This Useful Post:
JoeAllie (07-11-2014), Owner_of_2_Camrys (12-22-2012), rowguy57 (12-22-2012)
#6 Old 08-09-2009, 04:26 AM
Procrastinating on TN
 
knj27's Avatar
 
Join Date: Feb 2008
Location: Sunny AZ
Posts: 3,459
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 23
Thanked 21 Times in 7 Posts
iTrader Score: 0 reviews
Nice.


'93 Pickup 4x4 22R-E
knj27 is offline  
#7 Old 08-10-2009, 01:13 PM
Soylent Green sales
 
fourwd1's Avatar
 
Join Date: Jul 2006
Location: the Socialist State of Maryland
Posts: 8,308
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Thanks: 5
Thanked 480 Times in 459 Posts
iTrader Score: 1 reviews
Another useful tip is would be to get the front end uphill or in the air a little to allow air bubbles to work their way out. Otherwise you can get an air bubble trapped in the line (usually the heater).

SEARCH before asking
84 4Runner rockcrawler - ARBed 5.29's, 36" TSLs, dual t-cases w/ 4.7 crawler gear, Chevys, 30 spline Marlins
83 p/u trail rig - Buick 231 V6, Weiand intake, Holley 4 bbl, TH-350 auto w/700R4 low gearset, dual tanks ...
89 4Runner - stock
http://www.cardomain.com/id/fourwd1
fourwd1 is offline  
#8 Old 08-10-2009, 08:14 PM
Supafly
 
Jayota's Avatar
 
Join Date: Jan 2007
Location: B.C Canada
Posts: 4,402
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 4
Thanked 93 Times in 90 Posts
iTrader Score: 0 reviews
Use toyota coolant. It really is better then the other aftermarket stuff. Won't corrode your motor.

1991 Pickup - 3vze - 4x4 - SR5 - 5sp- 270k.
Currently in street DD mode

www.cardomain.com/ride/2572486
Jayota is offline  
#9 Old 08-10-2009, 10:19 PM
Official TN Member
 
denniswoo's Avatar
 
Join Date: Apr 2008
Location: va beach
Posts: 608
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 5 Times in 5 Posts
iTrader Score: 0 reviews
get another thermostat housing gasket remove the thermostat. after flushing fill the block up until you see the coolant right at the housing, install the thermostat and hoses finish filling the rest of the system.
when i do it this way i never have air trapped problems. when you fill it have it on as level a surface as possible. Mix your coolant with distilled water, I have flushed my truck every two years since I have had it and it is a 91 and the block is as clean as when it was new. I use a good quality coolant that is for an engine with dissimilar metal.
denniswoo is offline  
#10 Old 08-11-2009, 07:45 PM
Official TN Member
 
Join Date: Aug 2005
Location: san diego
Posts: 191
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
So I have 2 questions:

Do you have to drain the coolant from the engine block if you use the tee fitting method or does connecting the tee fitting bypass this step? I bought a tee fitting setup and it says nothing about draining the coolant from the engine block.

Does your drain plug stick out of the block a little? Mine looks like a bolt that is not threaded in all the way. It is pretty tight, and I don't want to rip on in and remove it if it is a possible hack/strip job from the last owner.

Last edited by pickuptruckguy; 08-11-2009 at 07:46 PM.
pickuptruckguy is offline  
#11 Old 08-11-2009, 09:01 PM
Official TN Member
 
denniswoo's Avatar
 
Join Date: Apr 2008
Location: va beach
Posts: 608
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 5 Times in 5 Posts
iTrader Score: 0 reviews
Buy a good brass petcock and install it in place of the block plug. They make some pretty good flush solution you run the engine for 30 minutes or so. After you flush for about 30 minutes open the drain at the radiator and block adjust your water hose at the tee connection so it does not pressurize the block I think city pressure is 35lbs or so and too much for the cooling system. On final flush just make sure the water is clean coming out of the block and radiator.
denniswoo is offline  
#12 Old 08-20-2009, 06:19 PM
New TN User
 
Join Date: Mar 2008
Location: oc
Posts: 17
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Brilliant T-Valve Idea!!

Just curious....I made the mistake of filling my system with Prestone and want to flush and re-fill with the Red coolant. Would running distilled water 2 or 3 time through the system till the water runs clear be sufficient for a coolant flush?

E
ericsurf is offline  
#13 Old 08-20-2009, 07:52 PM
One with the force
 
sb5walker's Avatar
 
Join Date: Jul 2007
Location: North America
Posts: 1,756
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 4
Thanked 98 Times in 81 Posts
iTrader Score: 0 reviews
If the water runs clear, it's sufficient, but that sometimes takes more than 2-3 flushes. Just be sure the heater control is all the way to hot so the heater core gets flushed, too.

As far as the direction to flush the heater core, has anyone tried backflushing it? Seems to me it might flush out some crap that was stuck in there, but I haven't tried it. If attempted, don't overdo the pressure and be sure to direct the outflow into a container so it doesn't go into the block.

89 4x4 X-Cab V6
WARNING: I'm not a professional tech - use any advice at your own risk. Working on vehicles is risky: you can kill or maim yourself or damage your truck if you don't know what you are doing. It's your responsibility to get qualified help if you lack auto repair training/experience.
sb5walker is offline  
#14 Old 12-21-2012, 08:38 PM
Official TN Member
 
Join Date: Dec 2005
Location: new york
Posts: 104
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 8
Thanked 5 Times in 4 Posts
iTrader Score: 0 reviews
"thegtc" gave some great info.
I'll hopefully add some useful info.
Very good idea to buy new thermostat, easy to install.
Always use 50% Toyota Red Coolant and 50% Distilled water, your gaskets will last forever.
The Engine Block Drain plug is a 14mm and can be accessed through the drivers wheel arch.




I used my garden hose nozzle, it was a perfect fit. Just put your thumb over the heater valve outlet, it will become self evident when the water starts flowing, you want the water to come out of the Engine Block Drain.
Happy Flushing



Last edited by milkybar; 12-21-2012 at 08:42 PM.
milkybar is offline  
The Following 2 Users Say Thank You to milkybar For This Useful Post:
Owner_of_2_Camrys (12-22-2012), rowguy57 (12-22-2012)
#15 Old 12-22-2012, 08:09 AM
New TN User
 
rowguy57's Avatar
 
Join Date: Oct 2007
Location: canada
Posts: 22
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 5
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Canada

Quote:
Originally Posted by thegtc View Post
Hey well no one ever really answered this guy. I recently bought a 1992 pickup with a 22re and had the very same question - I searched and searched and it took me quite awhile to find a definite answer, but I figured it out. So I though I would be nice and help out the next person with this question.

Here are some pictures. The part labeled "3" is the heater valve - it links to the hot/cold lever inside the cab and controls how much hot water flows through the heater core. Therefore, this hose - "2" ( blue line) is the "heater core inlet hose". The hose numbered "1" (red line) is the outlet hose. Connecting a flush kit to this line would not flush the system properly, it would be forcing water from your hose in the wrong direction to the heater core.

The two hoses were zip tied together, and it was better to remove the zip tie to do this. In the second picture, you can see that I zip tied the outlet hose temporarily away from the area to avoid damaging it. You can see where I placed the "T". The third picture just shows the complete job - after I zip tied the hoses back together. Don't forget to open the heater core valve (by turning the heater to the highest setting), before flushing. This is critical. Also remove the radiator cap, and open the radiator drain valve. Turn the hose on and let the engine run until the water runs clear.

Hope this has helped someone else.





How thoughtful of you to take the time and post these pics. As many of you know, the pics/diagrams/explanations in the aftermarket manuals (Haynes et al) are often pretty lame at best.

TN members like "thegtc" (and countless others), are what make this forum so great...Truly helpful DIY info expressed in a non-condescending and non-judgemental manner. Two BIG thumbs up from me !!!
rowguy57 is offline  
Sponsored Links
Advertisement
 
Reply

  Toyota Nation Forum : Toyota Car and Truck Forums > Toyota Truck, SUV and Van Forums > Hilux (Pickup) Forum > 89-95 Toyota Pickup/Hilux

Bookmarks

User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome