How Do You Replace An Engine Freeze Plug?

by | Last updated on January 24, 2024

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  1. Drain the from your car so it doesn't spill on the ground when you remove the freeze plug. …
  2. Remove the parts blocking your way to the freeze plugs. …
  3. Break the freeze plug free. …
  4. Remove the freeze plug. …
  5. Clean the hole that the freeze plug came out of.

How hard is it to change a freeze plug?

Replacing

freeze plugs is not hard

, but getting to them can be really tough with the engine in the vehicle. If you can't get the plug replaced in the car, then you may need to visit your local NAPA AutoCare Center for assistance.

How do I remove and replace freeze plugs?


Replacing freeze plugs is not hard

, but getting to them can be really tough with the engine in the vehicle. If you can't get the plug replaced in the car, then you may need to visit your local NAPA AutoCare Center for assistance.

How do you install a freeze plug without removing an engine?

They appear as circular holes in the outside of the head or block, and have metal pressure-fitted plugs that keep the water inside the engine. When freeze plugs rust or blow out, they leak and must be replaced. Some freeze plugs have difficult access locations, like those that sit next to motor mounts.

How do you fix engine block freeze plugs?

The right way to fix it is to replace the freeze plug. To remove a freeze plug, it is first

hammered into the block with

a big screwdriver or a large punch. When it “pops through” it is pried back out of the hole sideways with a pair of pliers or a screwdriver.

How much does it cost to replace freeze plugs?

Researching online, an easy to reach freeze plug could cost anywhere from

$200 to $400

, whereas a freeze plug that requires the mechanic to lift the engine or transmission out can cost anywhere from $900 to more than $1,800.

Can you drive with a bad freeze plug?

If you have no other option,

you may be able to drive with a bad freeze plug

. … As long as you keep your engine coolant full and your engine never gets hot, you could limp your car along with a leaking freeze plug although we never recommend it. It's messy and at any point could leak to your engine overheating.

Do Rubber freeze plugs work?

Re: Anyone used rubber plugs in place of metal freeze plugs?

They work well

. Several of them in my 67 Cougar right now. Just make sure they are all the way in before you tighten them down.

How do you remove a stubborn freeze plug?

When access allows, the best method to remove a freeze plug is

to pull it from the casting hole

. A dent puller or slide hammer with a screw point is screwed in a pre-drilled hole in the freeze plug and used to remove the plug.

Do freeze plugs work?


Freeze plugs typically fail by freezing

. This isn't necessarily a bad thing, though. Freeze plugs were originally used to protect engines from cold-related damage. If the coolant inside an engine freezes, it may cause the block to crack.

When should I replace my freeze plugs?

I'd recommend doing it

every three years or 60,000 miles

– given the cost of the consequences. Tom: If you don't have good rust inhibitors, rust will attack the weakest link in the engine block. That's the freeze plugs – which are designed to give way if the engine freezes, preventing your block from cracking.

What causes a freeze plug to go bad?

In some cases, as the water freezes and expands in your block, the freeze plugs will push out relieving the pressure of the freezing water and partially draining your cooling system. … However, freeze plugs can also start to leak over time simply due to

the heating and cooling cycles of driving your car

.

Can you reuse a freeze plug?


No – do not re-use it

. The sides of a freeze plug are slightly tapered to become a press fit in the opening. Once the plug has been used, the sides have been bent in and it will not fit as tightly as it should. They are so cheap that it's not worth the brain power to even think about it.

Will Stop Leak fix leaking freeze plug?

It easily seals leaks in plastic, aluminum, and metal radiators, heater cores, gaskets, and freeze plugs. One other benefit is this stop leak can be

added to

the cooling system without having to flush out the antifreeze.

How long does freeze plugs last?

Antifreeze has certain properties that can cause freeze plugs to rust. To avoid this, change your antifreeze every

three years

. If antifreeze isn't changed, or if you use plain water, the freeze plugs will rust until the coolant falls out and the plugs need to be removed.

How tight should a rubber freeze plug be?

if you use the rubber plug it should be real close to fitting without tightening, then

tighten just to hold it in the block

. also a good rule of thumb is if the motor has steel plugs in it and one rusted though….the rest aren't far behind.

Diane Mitchell
Author
Diane Mitchell
Diane Mitchell is an animal lover and trainer with over 15 years of experience working with a variety of animals, including dogs, cats, birds, and horses. She has worked with leading animal welfare organizations. Diane is passionate about promoting responsible pet ownership and educating pet owners on the best practices for training and caring for their furry friends.