frozen plugs exist due to the fact that of the manufacturer"s casting holes left over from engine blocks and cylinder heads. They show up as circular feet in the external of the head or block, and also have steel pressure-fitted plugs that keep the water inside the engine. As soon as freeze plugs rust or blow out, castle leak and also must it is in replaced. Some freeze plugs have complicated access locations, choose those that sit beside motor mounts. Fortunately, an median auto repair person can replace his hard-to-reach freeze plug by utilizing a couple of simple tools and also extraction tips.

You are watching: How to change freeze plug behind motor mount

Place the transition selector in neutral or park, for the form of transmission you have. Advanced the hood and disconnect the an unfavorable battery cable in ~ the terminal v a socket. Raise the former of the auto with a floor jack and also place to jack was standing under the frame. Advanced the rear of the vehicle and also place two jack stand under the frame.

Place a drain pan underneath the lower radiator hose. Unscrew the clamp on the radiator hose and pull the hose free, v a twist. Let the coolant drainpipe into the pan. Replace the water tap on the neck fitting and tighten the clamp with a screwdriver.

Take a shop irradiate underneath the vehicle and secure it alongside the frozen plug location. If you cannot gain a finger or driver on the damaged frozen plug, location a breaker bar and socket on the (horizontal) engine mount through-bolt nut. Fit an finish wrench ~ above the engine mount bolt head. Ease the motor mount nut v a the breaker bar. Madness the bolt out through a drift punch and also hammer.

Wheel the floor jack under the engine. Location a lumber block edge-wise in between the jack spoon and the lip that the oil pan, ~ above the frozen plug side. Pump the jack up just a couple of inches, come gain access to the frozen plug. Take the drift punch and also place the on the frozen plug. Win the punch numerous times v a hammer to knock the metal plug out.

Clean the freeze plug hole through carburetor cleaner and a cable brush. Wipe the hole seat clean through a rag. Press a rubber, screw-in freeze plug in the hole and also twist the in so the it seat flush. Usage an end-wrench come tighten the freeze plug bolt till the plug expands. Tighten it firmly, however do no over-tighten that or you will certainly crush the rubber plug.

Release the push on the floor jack. Remove the jack, shop light and also wood block. Push the engine mount bolt ago into that hole. Insanity the bolt with the motor mount through the hammer and drift punch. Screw ~ above the engine mount seed by hand. Hold the bolt head with an end-wrench, while you tighten the bolt head nut with a socket and breaker bar.

See more: How To Add Fonts To Sony Vegas Pro 13, How To Add Fonts To Sony Vegas Pro

Refill the radiator with the amount of coolant girlfriend removed. Certain the radiator lid tight. Start the engine and let it heat up to operating temperature. Take the shop irradiate underneath the vehicle and also check for any seepage indigenous the frozen plug. Advanced the automobile with the floor jack and also remove the jack stands. Test driver the vehicle and recheck for any kind of leaks.

Lifting the engine block a couple of inches on one side will certainly not damage any components. However, do not exceed 3 inches in height, or flex damage could an outcome to the exhaust system.
Floor jack Jack stands Screw motorists drain pan Shop irradiate Socket collection finish wrenches Ratchet wrench Breaker bar hardwood block Drift beat Hammer wire brush Carburetor cleaner Rags freeze plug (rubber insert, screw-on) Coolant

Chris Stevenson has been writing because 1988. His automotive vocation has actually spanned much more than 35 years and he authored the auto repair manual "Auto repair Shams and also Scams" in 1990. Stevenson hold a P.D.S Toyota certificate, ASE brake certification, Clean Air plot certification and also a California smog license.