Fuel in oil.
First off, thanks to everyone for all the great write-ups and problems I've solved thanks to this site. This is my first post because I've always been able to find my solution just by searching these forums.
So a couple of months ago when it started to turn cold here in Utah I put a Mr. Gasket fuel pressure regulator on my 4.2 w/ a Weber 38 w/ about 8,000-10,000 miles on a rebuild and when I checked my oil about 3-4 weeks later I noticed that it smelled of gas and had a tan/gray foam on the dipstick. So I got on here and searched and figured it was my fuel pump. Thought that maybe the extra back pressure from the FPR had blown out the diaphragm and it was getting into my crankcase that way(?). Kinda pissed me off because I had maybe 100 miles on that oil change, but oh well. So I replaced it with a new (not reman) one from O'Rielly and thought all was good.
So today I check my oil (have put maybe 50-75 miles on it since I changed the pump and oil/filter) and again it smells of gas along with the tan/gray foam on the dipstick.
First thing I think is fuel pump again but it's brand new, not a reman, and I haven't been able to find any other posts where people installed FPR's and had problems blowing out their fuel pumps diaphragm. Maybe I just didn't search for the right parameters, dunno.
Second thing I thought of was the fact that it runs like s*** when cold. It starts up just fine (pump the gas twice, crank it, and it starts up in less than a second usually) but it misses at idle (if I let it stay on fast idle it does ok with a slight miss here and there, but if I kick it off fast idle it drops to about 500 rpms (set at 800-850), misses a bunch, and has a hard time staying started) and nearly dies every time I start to accelerate. So maybe the unburned fuel is getting around the rings and getting into the crankcase? Would it be enough that I could smell it on my dipstick after so few miles?
Any help would be greatly appreciated. Don't dare to drive it much with gas leaking into my crankcase and diluting my oil.