I have a '96 5.0 volvo i/o, and did not drian the water from the engine this winter. I discovered that 4 of the 6 freeze plugs had popped out. I have replaced these as best i could, but they are painfully difficult to get to (engine mount brackets in the way), so they are not pressed in well. I have started the engine and it sounds ok.
Question 1: Is there a special tool to press these in? Can a shop do this for me?
Question 2: Is the casing behind the freeze plugs pressurized? Are the plugs trying to be pushed out?
Question 3: What are the tell-tell signs if there was more freeze damage besides the plugs? What would i look for?