I recently rebuilt my a15 engine and thought a similar problem was occuring . There is not a large flow of oil to the top end of the engine as i expected but merely enough to lube things up. I ran the engine for a while and i was surprised how long it took to cover the rocker gear. I hope this helps.

you may have the wrong head bolt in the oiler hole, a14 have one bolt longer then the rest, which goes in the center hole, dizy side of the engine. check that first. cheers ernie

We are having a problem with a A14 motor. There is no oil getting to the head and valve train. We have replaced the oil pump already, but still nothing. Some advise PLEASE !!!!!!!!!! We are running a hot A12 head on the engine, but I dont think this is the problem. We did reinstall the origanal A14 head, but still no oil getting up top.