ok there is a pipe coming out of furnace which is connected to a part which is connected to the end on the pump motor that the circulator coupling is housed in. Oil is leaking where these two are connected. does anyone know what I am talking about? If so what would be causing the oil to leak? Is this serious and could I fix this myself? kim

We bought our house in July, and it's my first experience with hot water heat. I have a forced hot water, two-pipe system in a two story house with radiators. Everything's on one zone with one thermostat in the living room on the main floor. My furnace and pump (in the basement) seem to work fine with water consistently heating up to 180 degrees and pressure in the system consistently staying at about 18 psi. I don't think my expansion tank is waterlogged. All of the radiators on our main floor heat up nicely, and I get a steady stream of water out of each one of them when I open the bleed valve (with the exception of one that will sputter a little bit of air). Upstairs is a different story. I have five radiators upstairs, and they all stay stone cold. We did have a repair guy come by last week. He cleaned the system for $89, and he told my wife (I was at work) that there's a lot of air in the system that needs to be bled out and that there could be an air pocket somewhere that's preventing water from getting upstairs. He recommended bleeding the radiators one at a time, alternating between upstairs and downstairs. I've been following the repair guy's advice, alternating upstairs and downstairs radiators. At this point there's one radiator on the main floor that will periodically spit out some air, but I get mostly water from it. Still nothing upstairs. When I first fired up the system this fall I was getting two radiators out of five upstairs to heat up. We had a leak in the water valve on our master bedroom radiator (this is one of the two that was getting hot). I tightened one of the large screws on the outside of the leaky pipe, which stopped the leak, but now the radiator won't heat up (though it does bleed small amounts of air from time to time). The other upstairs radiator that was getting hot when I first fired up the system seemed to [B]suck in[/B] some air when I opened the valve last night, and now it doesn't get hot at all (I've never gotten water out of that radiator). All of the upstairs radiators will occasionally bleed some air, and sometimes they'll suck in air when I open the bleed valves. This doesn't seem good. Here are some questions: --Should I just open up the valves on all of the upstairs radiators, turn the thermostat way up, and just let the system run until the upstairs rads start to get hot and bleed water? --Is there something that a fairly non-mechanically-inclined person can do to bleed air at the source (where the pipes come in and out of the furnace)? --I've read in a few places that it can help to increase the pressure in the system in an attempt to force water into stubborn places. Is this adviseable, and how would I do it? I know there are tons of posts on bleeding radiators, and I've tried to follow all of the advice I've read, but I'm just plain stuck. Many, many thanks in advance for any and all advice!