Cooling system w124 300d

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John Rodgers

Member
Joined
May 26, 2003
Messages
45
Location
Northern Ireland
Car
1992 190D 2.5. 1998C250TD and 1993 w124 300d estate
Hi I have just replaced a pipe on heating system,after filling the system i can't get heat to heater,any ideas how to bleed system .thanks john::cool:
 
Not had my 300d long but I flushed the water system and added fresh antifreeze and the only way I could bleed the system back up was to remove the temp sender switch sits on top of engine also make sure you got temp setting switches to max sorry if you have done these already
 
Just to the left of the battery is a heater pipe connection, bleed it there.
 
Cooling system w124

Tried bleeding at hose beside battery,even put garden hose on it and all I could get at other end was a trickle of water,any more ideas. Thanks John
 
If it's an air block it helps to park up on a kerb with the expansion tank at the highest point take the cap off and 'burp' it while running. Helped with my 230 anyway.
cheers
 

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