Head gasket sealant
02-18-2011, 10:33 PM
#1
CF Veteran
Thread Starter
Join Date: Jan 2009
Location: Baltimore, Maryland
Posts: 1,964
Likes: 0
Received 6 Likes
on
6 Posts
Year: 1994 1993
Model: Cherokee
Engine: 4.0
Head gasket sealant
Has anyone every tried any of the liquid head gasket repair products? I have noticed a small bit of milky stuff on the tip of my oil dipstick lately and am beginning to ponder a gasket/block leak. Bar's makes a head gasket/block seal but the instructions sound horrid. I'd hate to go thru all this and not have it work:
1. Allow engine to cool. Make sure engine is cool enough so radiator cap can be safely removed. (This could take 30 minutes or longer). Drain and completely flush antifreeze from cooling system and overflow tank. Using a flush “T” with garden hose works best. If cooling system is dirty, use a good quality flush following manufacturer’s instructions.
DIRECTIONS
1. Allow engine to cool. Make sure engine is cool enough so radiator cap can be safely removed. (This could take 30 minutes or longer). Drain and completely flush antifreeze from cooling system and overflow tank. Using a flush “T” with garden hose works best. If cooling system is dirty, use a good quality flush following manufacturer’s instructions.
ALL antifreeze must be removed or clogging may occur.
DISPOSAL: Observe local laws & regulations. Where permitted, dispose of in sanitary
sewer system. Never pour on the ground or in a storm sewer system.
sewer system. Never pour on the ground or in a storm sewer system.
2. For hard to stop internal leaks where coolant is leaking into a cylinder or the cylinder pressure is pushing coolant out, locate the cylinder causing the problem and remove the spark plug for best results.
TIP: An indication of a cylinder causing the problem can be found by removing the spark plugs and looking for one that either cleaner than the others, or has a tint of antifreeze color on the tip or porcelain.
TIP: An indication of a cylinder causing the problem can be found by removing the spark plugs and looking for one that either cleaner than the others, or has a tint of antifreeze color on the tip or porcelain.
3. Shake well, Mix Head Gasket Repair in bucket or container with approximately 3 quarts of warm water. Pour this mixture directly into the radiator. If using a small cooling system, like 4 cylinders with no A/C, mix ½ bottle of the Head Gasket Repair with the warm water.
TIP: If you do not have access to your radiator, remove top hose where it connects to the top of radiator and install product in hose. Reattach and tighten clamp.
TIP: If you do not have access to your radiator, remove top hose where it connects to the top of radiator and install product in hose. Reattach and tighten clamp.
4. Fill cooling system with water and reinstall radiator cap.
5. Start engine.
6. Turn heater on hot and fan on high.
7. Run engine for 5 minutes or until thermostat opens.
8. Turn vehicle off and allow engine to cool.
9. Top off cooling system with water and reinstall radiator cap. If you removed a spark plug in step 2 reinstall now.
10. Run engine at idle until normal operating temperature is reached. Continue running
engine at idle for 15 minutes.
engine at idle for 15 minutes.
11. Turn vehicle off and allow engine to cool.
12. Top off cooling system with water as needed and reinstall radiator cap.
13. Run engine at idle until normal operating temperature is reached. Continue running
engine, but at high idle. (1500 RPM’s) for 20 minutes.
TIP: For vehicles with intermittent or very minor leaks, it is recommended to follow step 13 by idling vehicle for one hour.
engine, but at high idle. (1500 RPM’s) for 20 minutes.
TIP: For vehicles with intermittent or very minor leaks, it is recommended to follow step 13 by idling vehicle for one hour.
14. Turn vehicle off and allow engine to cool for 1 hour.
15. Remove radiator cap and drain system.
16. Leave drain open and radiator cap off for 12 to 24 hours. If temperature is below freezing, vehicle must either be kept heated or immediately go to step 17.
17. Flush entire cooling system and refill with manufacturer’s recommended antifreeze/water mixture.
02-19-2011, 12:13 AM
#4
CF Veteran
Join Date: Jan 2011
Location: Missouri
Posts: 2,251
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1996
Model: Cherokee
Engine: 4.0HO
I know of one that works... I did not want to use it... but my mother insisted... she said she wanted to try it, it had a money back deal if it did not work...
it is called Blue Devil... it is $60 a bottle... and in many cases it works... from what I have seen though it will only work IF AND ONLY IF the head gasket leak it coolant to air, or coolant to combustion chamber leak, around 220F the chemical will change and start to harden, it will not melt again until at least 1500F... that is why it works...
well it worked... she has not had any issues in over 3 years
Blue Devil is a modified version of Liquid glass...
Sodium silicate is the proper chemical name... back in the day they used to use it to keep eggs safe in shipping
it is called Blue Devil... it is $60 a bottle... and in many cases it works... from what I have seen though it will only work IF AND ONLY IF the head gasket leak it coolant to air, or coolant to combustion chamber leak, around 220F the chemical will change and start to harden, it will not melt again until at least 1500F... that is why it works...
well it worked... she has not had any issues in over 3 years
Blue Devil is a modified version of Liquid glass...
Sodium silicate is the proper chemical name... back in the day they used to use it to keep eggs safe in shipping
Last edited by ericfx1984; 02-19-2011 at 12:18 AM.
02-19-2011, 06:25 AM
#5
CF Veteran
Join Date: Nov 2010
Location: In the middle of Minnesota!
Posts: 5,805
Received 99 Likes
on
88 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
It might work on a small leak, but as they say....."your results may vary". And there can be significant side effects.
If you have a diagnosed head gasket leak, suck it up, grab the toolbox, and get r done. It isn't a terribly hard job for most people that have reasonable mechanical skills.
If you have a diagnosed head gasket leak, suck it up, grab the toolbox, and get r done. It isn't a terribly hard job for most people that have reasonable mechanical skills.
Thread
Thread Starter
Forum
Replies
Last Post
cpnwrench
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
13
02-15-2024 08:09 AM
91cherokeeSC
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
41
10-29-2015 01:49 PM
Karmageddon
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
5
10-05-2015 08:29 PM
Crazynut1997
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
15
09-29-2015 08:14 PM
Dr.Capacitor
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
7
09-28-2015 10:26 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)