coolant loss

17 Pete 579 mx13.
After changing oil and water pump that was leaking, I started losing 1 quart of coolant a day. Do not see any leaks. Lots more if the usual backfiring while letting off accelerator.
Also the oil filter caps have s oil film on them that seemed to spray up. But no leaks I can see. No drips on ground of any fluids.
Pic of new water pump. Red dot sshows where a small drop of coolant is sitting that appears to have leaked from flange of pump not the drop hole.
This just happened along with the run down front of engine while I idled truck a few minutes.
When I installed pump I put Vasoline on one ring.
As far as oil film, I may have cracked small cap when tightening it. I heard a noise.

 

Problem solved. Well almost.
Stopped losing a lot of coolant. Don't know why.
But I just found a leak on back if engine. Probably blowing away when driving so I did not notice it before. Can't tell where it is coming from tight now but I will be finding it when it gets daylight.

 

I changed two. Is there more?
I thought maybe one of the hoses. They had to splice them hoses together to make longer so now 4 hose clamps.
Couldn't get under there far enough to see but it is coming from driver side on top of transmission housing

 

I have two drips so I think it is them hoses. I just loosened up coolant cap to let off pressure. Stopped the dripping.

 

Well as it turns out it was just a clamp on hose where mechanic put in new upgrade brass fitting. Was real loose.
I pulled plate under shifter and tightened it up.
Problem solved.
Now on to them non working blend doors. Well think I'll turn that over to repair shop.