engine loads up with oil

[steplift20]

+150 mercury 1988 sometimes its very hard or impossible to start my engine the reason i think is because when she does start she smokes alot like i just winterized her , i took it to a mechanic and he replaced the pulse valve last year, she was good for a couple of times but the last time i started her it was the same thing loaded up with oil, the oil injection is still on but im thinking of diconnecting it but what would cause it to happen again, i would like to keep the oil inj, system connected but i dont want to have this problem again, thanks for any help,
I also have to screw down my access hatch in the middle of my boat cause the screws are not holding . I was wondering what is under neat when i lift it up I had it fixed about 8 years ago but the guy did a crappy job
and im waiting for my trim assembly unit to replace thr one thats on there now , that one is no good
B--break
O--out
A---another
T--- thousand
1978 wellcraft steplift i love her so dont tell me to get another one please. its a personal thing