Question about 1987 Ford Ranger
Freeze plugs (also called core plugs) are generally located on one or both sides of the engine block, about half-way between the oil pan and the head. They are usually about two inches in diameter, there are usually two or three of them on each side. There is no need to change them unless you are loosing coolant from one, indicating they have rusted out.
The bad news is, they are a press-fit into the block, and are generally difficult to remove and replace without pulling the engine, because there are often other things in the way.
Pull the truck up on ramps and get under it, if you can see the one that is leaking, and nothing is in the way, you can measure the size and get an expanding rubber type to replace it (from your local auto parts store). Use a short piece of wood (such as a piece of broom handle) and a hammer to drive the old plug into the engine (drain the coolant first, of course), it can be left inside the water jacket, it won't hurt anything there. Install the new rubber plug in its place and tighten the nut to expand it. Refill the coolant and check for leaks.
Posted on Aug 23, 2010
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Posted on Jan 02, 2017
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