I have a 1997 Monaco Windsor with an 8.3 Cummins engine. I am cleaning my cooling system and have drained the coolant, added the cleaner, and flushed it after running the engine for a couple of hours. Now it's drained and I removed the set screw holding the coolant filter valve. I can't move the coolant filter valve to drain the pressure to the filter. I HAVE
to do that so that the pressure in the filter is down, but the valve is stuck. I sure don't want to break the handle to the valve, but the darn thing won't budge. Does anyone have a fix for me?
I'd sure appreciate a response here or via email. email@example.com