Foam in head........help

I am trying toget my teg back on the road. I went to take my valve cover off and underneath the valve cover was a cream colered foam like substance. I notices it before when I took my distrbutor out, and figured that it was just some greese or something, but this stuff is all over the back of the valve cover and on the top of some of the bolts. What is this, and what should I do? Please help before it gets worse.

what color is this colored foam? is it slimy? Try doing an engine flush, it’s probably sludge/grime for the years of build up…

The foam is creamed colored. I just had my head port and polished and put it on in the last couple of weeks.

Isn’t oil and coolant doing a creamy/milky substance when mixed?

maybe that’s your problem…