2015 Subaru Forester overheating.
Had hoses changed but didn't work. Spark plugs wet on one side not the other.
Please go to the FAQ on the front page, and read the article about overheating. There are Scotty videos there to help you.
Spark plugs wet on one side not the other.
sounds like a blown head gasket I'm afraid
Had hoses changed but didn't work.
Were the hoses leaking? Deteriorated/cracking? Hoses generally won't cause overheating unless they leak. An exception would be the lower radiator hose which is under suction, so if that softens it can choke off the coolant flow.
Spark plugs wet on one side not the other.
Wet with what? Coolant? Oil? If you've overheated the engine there's a good chance of a blown head gasket or warped cylinder head.