Originally Posted by MV-Romnya
Thank you all for the info - I took the heat exchanger apart on the week end and there was very little blockage in the tubes but lots and lots of rust between the tubes - I have read in this forum to clean with muriatic acid - is there any other way of cleaning
and getting rid of scale without using this dangerous stuff ???? - MVR
If you've got the tube bundle out, take it to a radiator shop for cleaning. Considering your description, it seems you need a good flush of the fresh water
side of your cooling
system, if not several, to remove rust/debris from the block/cooling galleries of the engine
. Most anti-freeze/coolant has a rust inhibitor but if the engine was operated with very old coolant
, or little or none, rust will form in the galleries sooner or later and will prevent the heat exchanger for functioning properly. Cleaning/flushing the engine will make3 a world of difference.