View Full Version : clogged coolant passages fix

06-01-2010, 10:11 AM
Ok, so aparently the prior owner of my poor b5 put stop leak in the coolant system, because the waterneck on the back of the block was missing a bolt and was leaking. Now after fixing it and replacing every cooling part in the car it still will not circulate coolant. I did do the headgasket too. Anyone have a brilliant idea how to fix this short of tearing it apart and hot tanking the block?

06-01-2010, 10:17 AM
Perhaps one of those products like BG Coolant flush might help. You changed the water pump, yes?

06-02-2010, 01:35 PM
Yes the water pump is brand new as is the radiator. I'm picking up a spare motor today but I would hate to have to do a re-build on a motor with only 100K on it for something like that.

06-03-2010, 10:49 AM
try to do several coolant flushes, if so hook up a garden hose to the upper rad hose and turn it on full blast and hopefully it will unclog everything