Question about Audi A4
The heater core is blocked ,now what you do here is take off the two feed pipes ,use a couple of pairs of mole grips to seal them so you do not loose your antifreeze then flush the heater core with the garden hose on full ,yes i know its wet job if your not carefull but make sure you reverse the flow at least enough times till water runs clear and if you have a or can borrow a power washer use that even better ,you will see lots of brown muck coming out every time you reverse the flow .Now if this doesnt work all that well use a funnel with a pipe on one side and a length of pipe on the other thats hight than the funnel and then fill with a caustic solution and leave for a few hours then flush it all out this will work as i do it quite often .
Posted on Nov 11, 2010
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Posted on Jan 02, 2017
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