Im losing coolant

get it pressure tested. It could be from the water pump. Check the connection where the hoses fit onto the heater core tubes. It could be a blown headgasket where the water jackets are, thus no evidence in oil and no smoke out the exhaust. How much coolant are you losing?
 
Im losing about a 1L a week its bad, I dont see any white smoke from the exhaust and I cant smell it. I got a KB kit going on soon but want to get this fixed first. I ll get it pressure tested and hopefully its not the head gasket.
 
probably the intake manifold is cracked. do you notice a funny smell sometimes when driving? if you have access to a beater car until your kb gets on i'd do that otherwise its about $600-$700 to get a new intake manifold.