Question about 1998 Chevrolet Blazer

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How hard is it to change freeze plugs(Casting plugs)?

Do you have to remove or lift the engine?

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They are a little tricky depending on which one needs to be changed. Usually I knock the bad one out and use some 3M yellow weatherstrip adhesive around the sealing point of the new one and just tap it in with a hammer and a long 3/8 inch extension. Knock it in evenly so it is not cocked in the hole. 

Posted on Jan 01, 2009

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I cant find the freeze plug 1997 mazda protege


If you cannot find the freeze plug, it is probably because you have no idea what you are looking for. First off, there isn't just "A" freeze plug on an engine, there are numerous ones located all around the block and sometimes on the cylinder heads as well. Some are concealed between the engine rear and firewall, some may be concealed behind accessories such as the power steering pump, water pump, or alternator, and yet others may be hidden between the engine and transmission. A freeze plug is a recessed metal disc that is pressed into the casting to allow expansion of freezing water to pop it out, preventing the casting from cracking in the event of a freeze-up in extremely cold conditions. Unfortunately, these plugs corrode over time and may leak, requiring replacement. The rule of thumb is that if the offending plug is accessible, replace the bad one and move on. If it is not accessible and you need to remove the engine to provide service, then you are best suited to replace ALL freeze plugs since you already have access to them and if one has gone bad, the others may well soon follow. You wouldn't want to go to the expense of pulling the engine to replace a rear freeze plug, only to have to it again in the short-term future. Here is a shot of some freeze plug openings....one with a plug in it and two that are open. Additionally, removal of the freeze plugs also allow for more thorough cleaning of the engine block in the chemical tank during engine overhaul and rebuilding processes.



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Oct 16, 2016 | 1997 Mazda Protege

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What can be accessed without pullin the engine..?


Howdey howdey...

Sounds like a long and interesting conversation... on a job you have yet to begin... looks to be 10 "plugs" in all... 6 block & 4 head sized for your engine: Yes accessable... but pretty difficult

KIA 1996 SPORTAGE 2.0L L4 DOHC Expansion Plug / Set.
(
rockauto and autozone links will be added below)

Informational purposes:
Freeze, Fost and Expansion plugs although popularly know by such names are merely SOFT or CASTING plugs...(holes that are used to clean out the "CASTING MATERIAL" from the manufacturing process.

They were never intended to be any kind of CLEVER pressure release for DARING & COURAGEOUS in our midst... who REFUSE to use anti-freeze. There is absolutely no GUARANTEE
the block HAS NOT BEEN CRACKED or RUINED by freezing.

If ice forced out the plug(s)... you MIGHT get by... replacing one but if they are corroded... they tend to all corrode... Corrosion and electrolysis are not indiscriminate... They will destroy everything. Yet another TRAVESTY that could have been prevented with fresh, clean anti-freeze.

Pulling the engine is the most efficient way to do that job.

For the world of folks that WANT to try to get by... there are rubber
plugs that can be used in lieu of the proper CASTING PLUGS.

Check out the plug removal tool... and the BOLT TIGHTENING RUBBER PLUGS shown on the URL (immediately below).

Hope this helps!

More Information for DORMAN 570010

Freeze Plug Kit at AutoZone com Best Freeze Plug Kit Products for Cars...

Jan 29, 2016 | Cars & Trucks

2 Answers

This is leaking anti freeze what do you call this ? It look like a plug of some kind. It under a 02 ford mustang. Engine Type 3.8L V6 OHV 12V . Need help asap. Let


That is referred to as a freeze plug. They are placed in engine blacks and heads to prevent cracking should the coolant freeze in the block. The expanding water would push them out. They will rust out over time. They can be removed and replaced. They are just a press-in metal disk.

Mar 21, 2015 | Ford Cars & Trucks

1 Answer

Is there a freeze plug between the engine and transmission?


To answer your question, there is no freeze plug between the engine and transmission. Freeze plugs are the result of the engine block's manufacturing process.

Whether you are manufacturing one engine block or thousands, the process is the same. An engine form is creating in a block of material. The form is a hollowed out reverse image of the engine into which molten metal is poured and allowed to cool and cure. When the engine mold form is cooled sufficiently, it is hauled out of the material and cleaned so that you have the engine casting. The engine casting is then cleaned further to remove rough spots and other imperfections.

After this and any further cleanings, the engine casting is sent further down the line for more work and assembly.

During the casting process, there are holes on the surface of the form through which the molten metal flows to fill the form. Once the engine form is filled, a small amount of material is allowed to fill the access tunnels and cap them off. When the casting is first removed from its form, it will have some metal "legs" that protrude from the bottom of the casting. Those "legs" are cut off near the surface of the casting. They are known as the freeze plugs. They plug the casting while it freezes or cools, thus the name freeze plugs.

Engines and transmissions are joined by the clutch and clutch plate in both manual and automatic versions. You can find further information about cars and repairs by looking at: www
Safecar infoCar safety Insurance Magazine

Oct 24, 2014 | Cars & Trucks

1 Answer

Where is the freeze plug location on a 1998 buick riviera supercharge


There are between 6 and 10 plugs. They are on the sides of the engine block, look under the exhaust manifolds. They are round plugs 1-1 1/2 " dia .. that are driven into the engine. Their purpose is to pop out in case the engine coolant freezes to keep the block from cracking.. They also allow the sand from sand casting to be removed from the engine block casting. during manufacture.. Replacing them can be easy if its one you can see and eaisly get at.. Can also be impossible without removing many parts and in some cases removing the engine from the car. Good luck. Go to an auto parts store (NAPA is a good one) And look at or purchase a plug so you know what you are looking for.

May 14, 2014 | 1992 Cadillac DeVille

1 Answer

Ram d50 engine casting numbers


All engines will have it on the side where the core plugs are roughly in line with them sorry freeze plugs to you ,regardless of make

Mar 20, 2012 | Dodge Cars & Trucks

1 Answer

Leaking oil out think its the freeze plugs


"freeze plugs" actually are installed in a block to seal off the holes where the stuffing that is put into the casting gets removed. The stuffing is what forms the water jackets that cool the engine.
That said, there is no way a freeze plug can ever leak oil because they only cover water passages.
Keep looking and you will find the actual leak source!!

Jan 23, 2011 | 1999 Chrysler 300M

1 Answer

Are there freeze plugs on a 2005 Chevy Equinox? We had a hard freeze last night and now the heater doesn't work.


Freeze plugs are actually Core plugs for the block to get the sand out when casting the engine block from cast iron. They actually have nothing to do with freezing, or the heater. What do you mean by "doesnt work" ??? doesnt blow at all? doesnt blow hot?

Dec 14, 2010 | 1992 Chevrolet C1500

2 Answers

Overheating 1985 k5 350 engine, leaking coolant, all water hoses, thermostat & waterpump replaced. possible leak above starter, also maybe a freeze plug, leak hard to find. please advise


Never, never, never use 100% water in a cooling system. Always. always, always add 50/50 antifreeze/water solution so that the CASTING pluggs don't rust or freeze (they are NOT freeze pluggs). If it froze with water in it you have a 75% chance that the motor is junk; 25% chance that you can fix it by replacing the CASTING plug. I drill a small hole in them and screw my sliding hammer in and pop them out (nearly impossible in the vehicle). Adding water to a cooling system is NOT cost effective. Ray (garage owner)

Sep 20, 2010 | 1985 Chevrolet S-10 Blazer

2 Answers

Can't remove the alternator! How do you remove the alternator on a Ford Focus 2001 without unbolt the engine mount?


The other option, but be warned could cause damage to the motor mounts, is to use a cherry picker to lift the engine up enough to clear the alternator from the engine bay.

Sep 11, 2010 | 2001 Ford Focus

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