my boiler is leacking water from the bottom. Every time I fill it up with water. I have a oil burning steam boiler.
Your heat exchanger is cracked or rusted. Before replacing your furnace you should consider trying a boiler stop leak.
You have to replace it or have a pro try and fix it which usually ends up more $
There is a product for this purpose. I have used it and it works wonders. It contains silicone, but I cant recall the name of it... It is sold at plumber supply houses. My boiler was about 25 years old at the time, and it started out in a slow dripping. Left with little choice, I put it into the system near the return, turned the heat up to 75, so the system would run for a good long while and it worked. I was pleased. Two years later it again leaked, only this time it was a steady stream, and being in the middle of winter had little choice but to return to the store. I was doubtful it would work a second time. Again, I poured the bottle in, and like magic the leak stopped. The following year I replaced the boiler, as I did not want to press my luck....(I alrready had..) It comes in a quart plastic container, and is called something like Boiler Leak or Stop :Leak and is brown (like stain) in color. It still amazes me that it worked two times for me. It is about $15 bucks. Such a deal. I just re-read your question, and noticed it said steam.... My system is hot water, and runs on less heat and pressure...you may wish to check out the label, and ask the service desk if this will work on a steam system...sorry.
Boiler stopleak does work on steam boilers as well as hot water boilers. Amazing stuff. Keep in mind though that it is more of a Band-aid than a permanent fix.It can work for a long time or it can let loose on the coldest winter night in the coldest month of winter...
