Where is the freeze plug on my 91 honda accord

Have you replaced the timing belthis could be the cause.

could be a hose but it is costly
always check the water and have it pressure tested fast
driving with a leak can empty the sustem and burn the engine

Is it coming from radiator or hose engine block?

Hi,
Looks like the one advises u about the coolant plug( rubber cap that stops the coolant from accessory tube ) or u have a leaking water pump is right! The age of ur might have taken its toll to those parts!
Better check on those!

Well fortunately core/freeze plugs rarely leak anymore so the most likely cause of your leak is a heater hose at the passenger side firewall. Place a piece of clean cardboard under the area and run the engine. Watch closely the two heater hoses coming from the heater control valve and into the firewall(heater core), I'm sure you will find your leak up there. Thanks, Dana

which side of the engine? What size engine? If it is passenger side could be a head gasket, timing cover gasket or more likly a intake gasket

probably your lower rad hose. shine a flashlight around underneath and see if you see it reflecting off of a liquid trail, that will tell you where the leak is coming from. you can also get leak tracer to add to your coolant that will leave a more visible sign.

Sounds like you have a freeze plug that has rusted out. And it is located in side the bell housing behind the flywheel. You will need to remove the transmission and the flywheel to gain access to the freeze plugs. There are two of them at the rear of the engine above the center line of the crankshaft. One to the left and one to the right.

A heater hose or possibly a soft plug. the soft plug is about the size of a quarter or half dollar and is there to drain sand out when they cast the motor and also gives a small amount of expansion room for temperature changes and in case of freezing. the plug can and will corrode and develop a small hole. there are probably 8 or more of them in various places around the motor. sometimes the head gasket or intake gasket will leak and most of these are easy to see but not easy to fix. use a mirror and a flashlight to help you see the back side of it.

theres a 3/4 inch (hidden) hose coming out of the back of the head. you have to climb underneath and look up behind the motor on the driver side youll find it trust me its up there.