Question about 1998 Subaru Forester
It has a new thermostat, but still overheats. The top radiator hose bolges like it is going to explode?
The head gasket may be a problem, but it may be simpler, if your thermostat is on the bottom of the engine.
If coolant came out when the thermostat was changed, there should be a screw, probably plastic, that goes into the radiator, or near the inlet hose, at the top. This screw is used to release steam when car overheats to restore the vaccum. Turn car on and let idle to overheating temperature. NOW PROTECT YOURSELF FROM GETTING A STEAM BURN. Turn the screw very slowly until steam starts to come out, don't unscrew all the way or you will loose a lot of coolant all over your engine. make sure the coolant resevore has enough coolant to get sucked back in to the engine or this will take longer. Continue this process until there is no steam coming out, I let mine go until a little liquid coolant starts to bubble out from around the screw. Tighten screw and keep a watch on your temp gage, you may have to do it a couple of times as the coolant forces the air pockets out of the line. If this doesn't solve your problem then I would say check the headgasket.
Posted on Feb 28, 2009
Sorry, but you have a blown head gasket! Be prepared, it isn't easy, or cheap, to have fixed.
The exhaust is pushed through the head gasket into the coolant which is adding so much pressure to the cooling system. It's very possible for the hose to blow off, or blow a big hole in the side. Not fun.
Posted on Jan 04, 2009
Best Answer... my car kept over heating and spilling anti freeze and no heat... Different people said its a head gasket but it wasent... The whole time all it needed was a upper radiator hose and a coolant flush with a heater core flush thanks Midas
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Posted on Jan 02, 2017
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