Mudron
Active Member
I recently changed the thermostat and water pump on my 300 disco auto after discovering the bottom end rumble noise was in fact a failed water pump bearing.
After changing both, I could not get the engine to bleed up, specifically, no heat from the heater unless you rag the engine! Disaster!
I took it to a tame specialist around the corner from work, and they fixed it in 30 seconds flat!
So, what happened was......(jethro voice).....
They removed the expansion cap, opened the rad plug, and one chap blew into the expansion tank by making a seal with his mouth and a rag. Water then flowed from the rad plug, at which point the chap quickly put the rad plug back in.
The repeated the same process with the thermostat plug, and finally topped the expansion tank to he correct level.....and hey presto!....no air locks (the smaller air bubbles can now work their way out by themselves with driving) and nice hot heaters!!!!!
Just thought I would share this info in case anyone finds it useful!
After changing both, I could not get the engine to bleed up, specifically, no heat from the heater unless you rag the engine! Disaster!
I took it to a tame specialist around the corner from work, and they fixed it in 30 seconds flat!
So, what happened was......(jethro voice).....
They removed the expansion cap, opened the rad plug, and one chap blew into the expansion tank by making a seal with his mouth and a rag. Water then flowed from the rad plug, at which point the chap quickly put the rad plug back in.
The repeated the same process with the thermostat plug, and finally topped the expansion tank to he correct level.....and hey presto!....no air locks (the smaller air bubbles can now work their way out by themselves with driving) and nice hot heaters!!!!!
Just thought I would share this info in case anyone finds it useful!