Hello I have a 1990 HONDA ACCORD F22A1 202,588 miles as of this morning anyways I have a coolant leak I've already made a post on here but need a little bit more help my local mechanic claims he can't find the leak and would need a pressure test but before taking it for one I would prefer to find it myself as I have a few new pictures and questions. With the pictures below that hose I have a flash-light on is that a coolant hose? Because that is where the leak is coming from around that area at-least it's right above the water pump. Please note that all of these pictures are of the back part of the rear engine drivers side near brake master cylinder and this hose tracks back to what I believe is the fire-wall also the leak hasn't been real bad recently but still leaks slowly. Someone mentioned it being hose 17 near the throttle body but that is on the passenger side of the engine isn't it? As It may be hose 17 it is not in the correct spot where it is actually leaking where it is leaking it's on the drivers side rear part of the engine assuming that is a coolant hose as it seems when it leaks it drips down the block right above those two holes in the fourth picture.

 

odds are its the water pipe to heater coolant hose ... that hose is really tricky to get to ... when i replaced mine i had to pull the driver side axle to get clearance where it attaches to the block and i had to pull the throttle body to get clearance where it attaches to the heater .. you will need to use a razor and cut two slits in the hose towards the firewall and then grab the hose and pry it off where it attaches to the heater as it will be binded and rusted on there from the many years of heat

good luck