The recent thread on flame traps and oil being blown through seals caused me pause. I've got oil blowing through the front seals, behind the water pump pulley and the lower pully from the looks of it. The odds are better that 50-50 that the flame trap is clogged. After much searching under the hood of my 1990 240, I think I've found it by tracing hoses to it (none of my manual actually show the location, and none have instructions for removal).
How the heck do you get the danged thing out of there without removing the injector rail? Sheesh! And what was volvo thinking? This is a simple and important item, it ought to be trivial to access and replace.