top radiator hose collapsed

pimpmyc250td

Active Member
Joined
Apr 8, 2011
Messages
83
Location
republic of mancunia
Car
c250tdw202
hi

just found the top hose on my c250td flat rather than round,as if the system has a vacuum, car is not losing fluid temp never gets above 80

i changed the expansion cap last week, so is this related ( just put the old one back on)... hose is now back in shape, after taking the expansion cap off ....is it a sign of an underlying problem....

top hose is still warm, bottom cold , radiator cold,

I was planning a system flush out at some point should i change the thermostat too, and get on with the flusing???
 

Mercsys

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Apr 5, 2011
Messages
256
Location
West London, UK
Car
S350, & E320 CDI Estate Avantgarde
Looks like the new cap is not rated to the correct spec, or may be faulty, there is usualy a very low neg pressure rating spec. The new cap doesent seem to be doing what is needed, your hoses wont like being squashed and then pressurised.
 
OP
OP
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pimpmyc250td

Active Member
Joined
Apr 8, 2011
Messages
83
Location
republic of mancunia
Car
c250tdw202
Thanks...new cap was source
From ecp...I will pick up a New mb cap, and swap out the top hose as its very soft
 

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