News:

www.W116.org - The #1 resource for our W116! Established 2004

Main Menu

replacement coolant hose the easy way?

Started by BCK1963, 12 April 2021, 01:45 PM

BCK1963

My upper coolant hose from the thermostat housing to the engine top leaks a bit when the engine is cold. Not much but too much to not worry
Anyone have an idea or experience how much coolant would rinse out if I remove the thermostat housing without prior coolant drainage?
I also think of sucking out as much fluid as possible through the thermostat thread with a vac pump and a hose and catch the residual with a cloth.

    thanks ahead
Bernd

1976 Merc 6.9   Magnetit blue

raueda1

At some point I did exactly what you have in mind.  I figured it couldn't be all that much coolant.  After all, the thremostat is pretty high up.  It turned out to be a lot more than I anticipated.  Put a big tray underneath the car and be prepared for more of a mess than you'd expect.  Good luck and cheers,
-Dave
Now:  1976 6.9 Euro, 2015 GL550
Before that:  1966 230S, 1964 220SE coupe, 1977 Carrera 3.0