Last weekend, I noticed the waterfall sound behind my dash. Disco Mike walked me through the process and Monday evening I bled it and that went fine, and the sound went away. However, since Monday evening, my coolant level in the resevoir has dropped about an inch.

I haven't noticed a drop on the ground, and I checked my oil and no irregularities there either. It hasn't even hinted at running hot and my heat is working great, but I must have a small leak somewhere.

Any key spots that I should look at? It's obviously a very small leak, but I'd like to take care of it before it gets worse.

Last night I did read a thread about tightening the two v/c bolts because they tend to leak oil from there. Mine wasn't showing any oil leak, but I went ahead and tightened them anyway, as they were a little loose. Is there any way that I could have been loosing a little coolant from there as well?

 

throttle body heater gasket gone bad? or the other thing is once you burped the system and got the air out it allowed the coolant to disperse in the system and your fluid level evened out in the system.

 

Don't see any evidence of the throttle body gasket being bad, so maybe it did even out. I'll top it off tonight and see if the level holds.

I also wondered about evaporation from the overflow hose.

 

I'm having the same problem, i keep having to burp and bleed the system but no visible leaks after a full rebuild! I am at a loss of what to do next.

 

Pressure test is simple.