Hoses tight, pump gasket is good, hasn’t even fired yet. I honestly do not know how it’s getting on top. Intake was put on with new gaskets and A sealant, like all the others I’ve done. I’m thinking a warped intake perhaps?
Hmmm. You said on top of radiator. How long does it take to show up. Clean it off, fill and watch. Not gonna hurt anything more than what is already done