I have a 98 saburu forester and there is a lot of water coming out it empty my radiator
Sounds like a cracked head or blown head gasket.
Yep, better get it fixed or you will be replacing O2 sensors and if it goes too long the catalysts wil go also.
Joe, water is a byproduct of combustion. If you are losing coolant, I would recommend pulling the 'diaper' from under the engine and check for coolant under the engine. The shroud is held on with 4-6 10mm or 12mm bolts. When you look up from underneath, look at the Y pipe exhaust and look for stains. Look at the oil filter and around each side of the engine (each cylinder head) for green. Anything that is wet looking is current weeping. Black is old oil. Also look under / along the front of the car - if it is an automatic, there should be a hose to hard-line to hose from the oil filter (and oil cooler) that goes back to the radiator. Sometimes these hoses go bad. Check these things, come back here and give us an update.
Have you assessed the conditions under the engine yet Joe?
Looking for a Used Forester in your area?
CarGurus has 39,749 nationwide Forester listings starting at $1,650.
Search Subaru Forester Questions
Subaru Forester Experts
Related Models For Sale
Used Cars For Sale