Removed coolant block drain plug and nothing came out - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 10-05-2014, 08:59 PM
Thread Starter
  #1
Moderator

WF Lifetime Member
::WF Moderator::
 
Laggy's Avatar
 
Join Date: Sep 2014
Posts: 3,717
Removed coolant block drain plug and nothing came out

97 TJ 4.0L i6. As the title states, I removed block coolant drain plug and nothing came out.

Background. I'm replacing most of the cooling system components. I have thermostat and housing off. Water pump off. I direct flushed heater core. I wanted to flush the block. Honestly, when I took water pump and thermostat housing off and honestly I can't really picture how water flows. But I flushed with a nozzle anyway.

I got the 8mm tool from Pep Boys and took coolant plug out. Nothing came out. Back of plug had a little soft gray buildup, almost like gray mud. Not alot, but I expected to find rust colored buildup. I tried spraying air from compressor in the hole. Couldn't really get a hose in there.

What gives? Should I just call it good and put my new parts back on and call it good? I really don't want to go after freeze plugs...

Laggy is offline   Quote
Old 10-05-2014, 09:07 PM   #2
Jeeper
 
Weirdracin's Avatar
 
Join Date: Apr 2014
Location: Ohio
Posts: 375
Tried sticking in a screw driver to break apart the build up possibly blocking it?
Gray mud, possibly radiator leak material, maybe had a head leak or radiator leak at one time and someone put in the stop leak and it settled in the lower block?

__________________
"A person who never made a mistake never tried anything New. -Albert Einstein"

"Logic will get you from A to B. Imagination will take you Everywhere. -Albert Einstein"
Weirdracin is offline   Quote
Old 10-05-2014, 09:50 PM
Thread Starter
  #3
Moderator

WF Lifetime Member
::WF Moderator::
 
Laggy's Avatar
 
Join Date: Sep 2014
Posts: 3,717
Ah radiator stop leak would make sense.

No I haven't tried that. I will when I get off work tonight.

Just trying to verify: when I spray water into the block area where water pump impeller goes, I should get water coming out coolant plug, right? That IS the lowest part of the cooling system...
Laggy is offline   Quote
Sponsored Links
Advertisement
 
Old 10-05-2014, 11:07 PM
Thread Starter
  #4
Moderator

WF Lifetime Member
::WF Moderator::
 
Laggy's Avatar
 
Join Date: Sep 2014
Posts: 3,717
Quote:
Originally Posted by Weirdracin View Post
Tried sticking in a screw driver to break apart the build up possibly blocking it?
Gray mud, possibly radiator leak material, maybe had a head leak or radiator leak at one time and someone put in the stop leak and it settled in the lower block?
Ill use an anal probe. Don't wanna scratch anything ;-)
Laggy is offline   Quote
Old 10-06-2014, 08:20 AM   #5
Supporting Member

5-Year WF Supporting Member
 
TjMtl's Avatar
 
Join Date: Feb 2014
Location: Canada
Posts: 1,026
I hope you're a doctor! Lol
TjMtl is offline   Quote
Old 10-06-2014, 11:15 AM
Thread Starter
  #6
Moderator

WF Lifetime Member
::WF Moderator::
 
Laggy's Avatar
 
Join Date: Sep 2014
Posts: 3,717
I wouldn't say "doctor". More of a weekend warrior/backyard surgeon.
Laggy is offline   Quote
Old 10-06-2014, 04:27 PM
Thread Starter
  #7
Moderator

WF Lifetime Member
::WF Moderator::
 
Laggy's Avatar
 
Join Date: Sep 2014
Posts: 3,717
So I called a local shop. Dude said that short of removing a freeze plug, there's nothing I can really do. He said not to attempt to break it up because I can't get it all out and then the loose stuff will get in to circulation and clog up my new radiator.

He said the micro chunks of grayish dirty stuff is common.

This sucks because I wanted to have a super clean, super efficient cooling system...or at least the best one possible. It seems pointless to just take out one freeze plug. I need to take to headers off to get oil pan off to do rear main. Then there's the matter of rear freeze plugs which ain't happening period.

Why do I feel like this engine needs to come out for a good once over??
Laggy is offline   Quote
Old 10-06-2014, 04:29 PM   #8
Supporting Member

WF Supporting Member
 
jkjeeper06's Avatar
 
Join Date: Jul 2010
Posts: 4,391
Why not break it up and then repeatedly flush it out with tons and tons of water? It'll take a lot of time but your engine will be cleaner which is important
__________________
"You didn't buy it to look at it"
2000 TJ Solar yellow, 3.73, 202k, limited slip D44
2012 GMC sierra crew cab--Daily Driver
2008 jk X 6spd Red Rock---Sold and missed
jkjeeper06 is offline   Quote
Old 10-06-2014, 05:13 PM
Thread Starter
  #9
Moderator

WF Lifetime Member
::WF Moderator::
 
Laggy's Avatar
 
Join Date: Sep 2014
Posts: 3,717
Quote:
Originally Posted by jkjeeper06 View Post
Why not break it up and then repeatedly flush it out with tons and tons of water? It'll take a lot of time but your engine will be cleaner which is important
Agreed! I really just want a clean system.

Well, because your asking a bunch of crap to come out a very small hole (that's what she said). And if you get a lot, but not all of it, then it's gonna get back in circulation. Packed/settled vs broken-up.

Removing a freeze plug or two, is pretty much the only way.
Laggy is offline   Quote
Old 10-06-2014, 07:07 PM
Thread Starter
  #10
Moderator

WF Lifetime Member
::WF Moderator::
 
Laggy's Avatar
 
Join Date: Sep 2014
Posts: 3,717
Quote:
Originally Posted by Weirdracin View Post
Tried sticking in a screw driver to break apart the build up possibly blocking it?
Gray mud, possibly radiator leak material, maybe had a head leak or radiator leak at one time and someone put in the stop leak and it settled in the lower block?
Good news: Got a screwdriver in there and a little water came out. Did it more and it came flooding. Ran water from hose through high pressure nozzle and it clogged again. Got a super small screwdriver and really got in there. It's not clogging anymore.

I'm thinking of non-corrosive cleaner or maybe dishwashing tablets. Get old radiator and water pump hooked up. Run it for 15 minutes and then see what comes out.
Laggy is offline   Quote
Old 10-06-2014, 07:50 PM   #11
Jeeper
 
CtacTj's Avatar
 
Join Date: Aug 2014
Location: Western NC
Posts: 151
I use Cascade powder, dissolve in a bucket of water, add to radiator, fill with water, no t-stat, warm up engine let it circulate, leave it in for awhile? Drain, rinse, repeat! Regards.
CtacTj is offline   Quote
Old 10-07-2014, 12:40 AM
Thread Starter
  #12
Moderator

WF Lifetime Member
::WF Moderator::
 
Laggy's Avatar
 
Join Date: Sep 2014
Posts: 3,717
Quote:
Originally Posted by CtacTj View Post
I use Cascade powder, dissolve in a bucket of water, add to radiator, fill with water, no t-stat, warm up engine let it circulate, leave it in for awhile? Drain, rinse, repeat! Regards.
Nice. Do you use this as preventative maintenance or as a repair? Do you get significant particulates or sludge coming out?
Laggy is offline   Quote
Old 10-08-2014, 11:45 AM   #13
Jeeper
 
CtacTj's Avatar
 
Join Date: Aug 2014
Location: Western NC
Posts: 151
As a PM, I've been doing this from the first coolant change @ 3yrs(5yr coolant) and every change since. Never got any crud or discolored fluid out of the system. Always refilled with G05 coolant and distilled water. Owned the jeep since new. Never had cooling issues. Have used this on friends vehicles and after multiple flushes got their systems alot better. Stopped their OH issues, usually replaced the radiator or had it cleaned at radiator shop. Hope you can get your system cleaned out. Regards.
CtacTj is offline   Quote
Old 10-08-2014, 12:03 PM
Thread Starter
  #14
Moderator

WF Lifetime Member
::WF Moderator::
 
Laggy's Avatar
 
Join Date: Sep 2014
Posts: 3,717
How much powder do you use? Do you just dump it I'm radiator or in a hose, then fill the system?
Laggy is offline   Quote
Old 10-08-2014, 12:24 PM   #15
Jeeper
 
CtacTj's Avatar
 
Join Date: Aug 2014
Location: Western NC
Posts: 151
I dissolve about a cup of Cascade in about 2 gals of water, pour into radiator with no t-stat, fill system, warm engine- circulate, let sit awhile,drain, rinse repeat until you quit getting out ugly water. Regards.

CtacTj is offline   Quote
Reply

Thread Tools

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 Off
Pingbacks are Off
Refbacks are Off






All times are GMT -5. The time now is 08:53 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, Gladiator, Mopar and Grand Cherokee are copyrighted and trademarked to FCA US LLC.
Wranglerforum.com is not in any way associated with FCA US LLC.