I recently put in an electric vacuum pump on my gsr motor and plumbed it to the black canister. It was also tee'd to the top valve cover port as well.. I also took out the PVC valve from the canister and reconnected the hose to the canister.. Lastly, I drilled and tapped 2 ports on the front of the VC behind the baffles for extra venting..

THis was also done after replacing my head gasket w/ a GE HG.. my old Cometic took a dump on me..

Well, i checked my catch can that I also ran inline w/ the vacuum hose right before it goes to the vacuum pump and it was filled w/ coolant/water mixture.. NOT oil.. THere wasn't even traces of oil in the catch can.. jsut the watery liquid.. I used a napkin to absorb the fliid out of the canister, and it definately looks and smells like coolant.

I am totally stumped on how coolant ended up in the catch can w/o any trace of oil or the milky substance of oil mixing w/ coolant.. it was as if i connected the vacuum hose to a coolant line or something.. But I am 100% sure its hooked up correctly..

 

I dont have an answer for you but what kind of vacuum pump did you get?

 

it could be leftover residue/coolant/moisture from when you first headgasket took a dump?

what does your engine oil look like? take off the oil cap and have a look under it to see if you get the same milky residue

 

can't be, because the catch can keeps filling up even after i drain it.. and its the same kind of liquid too.. not even milky..

I will try check the VC tomm..

 

could be just condensation , because oil needs to be over 220 degrees to boil out the condensation , and by the time it hits the tube it cools down , are you loosing coolant ??? and what oil are you running ????

 

okay,

i just checked the underside of my VC.. its perfect, no signs of milkyness.. but my catch can that I have inline w/ the vac pump and black box still accumulates this coolant liquid, though not as much as before..

my coolant level in my resivior seems to be constant, no signs of lost coolant after bleeding the system..