CRAZY_RUSSIAN

Ok, so trying to bleed the cooling system on my B4, and just like anyone else, the stupid crew on the heater core hose is busted off. and for some reason i keep building up steam in that hose, so i went to pop the hose off, and BOOOOM... a $hit load of steam and coolant just busts out of that hose and knocks me half way across my garage, thanks god for the mechanic gloves and good reaction [i gause i wont have kids;-) ]. First thing, I'm ordering a new hose with a working screw! But my questions is what can cause that? the thermostat and water pump are brand new from VW/Audi. Is there a way to replace that screw with something else if i can get it out? I didnt find anything in FA about replacing that screw :-(
I swear, this car is hating me more and more...

Luxus Panzer

thats what you get for working on the coolant system while it is hot and pressurised. No brain-er

CRAZY_RUSSIAN

LOL, thanks buddy :-) but how r u supposed to bleed that stupid thing then?

dtompsett

The previous owner had installed one of those kits you'd use to flush a coolant system. Plastic 'T' with a cap you take off to introduce water from a hose.

Just plumbed it in-line with the existing hose.

But I've never had a problem with just pulling off the end of the hose just enough to let out the air and a bit of coolant. Ya, don't do it when the system is hot/pressurized.

SCarGo02

...to let the air escape. Once you get a dribble of coolant you close it.

Luxus Panzer

nope. I ended up using same piece to bypass the heater core in the 93 until I had time to fix it....

4Driver4

"for some reason i keep building up steam in that hose" Maybe because there is air in there?

CRAZY_RUSSIAN

thank you guys, i will try doing it again tonight while its cold :-)

CRAZY_RUSSIAN

Heater on or off? or dose it matter?

Lago Blue

Apparently, you also hate reading the "cautions" in the little owner's manual!!!